3890 (number)
3,890 (three thousand eight hundred ninety) is an even fourdigits composite number following 3889 and preceding 3891. In scientific notation, it is written as 3.89 × 10^{3}. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 1,552 positive integers (up to 3890) that are relatively prime to 3890.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 4
 Sum of Digits 20
 Digital Root 2
Name
Short name  3 thousand 890 

Full name  three thousand eight hundred ninety 
Notation
Scientific notation  3.89 × 10^{3} 

Engineering notation  3.89 × 10^{3} 
Prime Factorization of 3890
Prime Factorization 2 × 5 × 389
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  3  Total number of prime factors 
rad(n)  Radical  3890  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 3,890 is 2 × 5 × 389. Since it has a total of 3 prime factors, 3,890 is a composite number.
Divisors of 3890
8 divisors
τ(n)  Total Divisors  8  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  7020  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  3130  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  877.5  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  62.369864518051  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  4.4330484330484  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 3,890 can be divided by 8 positive divisors (out of which 4 are even, and 4 are odd). The sum of these divisors (counting 3,890) is 7,020, the average is 87,7.5.
Other Arithmetic Functions (n = 3890)
φ(n)  Euler Totient  1552  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  388  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 542  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  16  The number of ways n can be represented as the sum of 2 squares 
There are 1,552 positive integers (less than 3,890) that are coprime with 3,890. And there are approximately 542 prime numbers less than or equal to 3,890.
Divisibility of 3890
m  2  3  4  5  6  7  8  9 

n mod m  0  2  2  0  2  5  2  2 
The number 3,890 is divisible by 2 and 5.
Classification of 3890
By Arithmetic functions
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Other numbers
 Sphenic
Base conversion (3890)
Base  System  Value 

2  Binary  111100110010 
3  Ternary  12100002 
4  Quaternary  330302 
5  Quinary  111030 
6  Senary  30002 
8  Octal  7462 
10  Decimal  3890 
12  Duodecimal  2302 
16  Hexadecimal  f32 
20  Vigesimal  9ea 
36  Base36  302 
Basic calculations (n = 3890)
Multiplication
n×yn×2  7780 

n×3  11670 
n×4  15560 
n×5  19450 
Division
n÷yn÷2  1945.000 

n÷3  1296.666 
n÷4  972.500 
n÷5  778.000 
Exponentiation
n^{y}n^{2}  15132100 

n^{3}  58863869000 
n^{4}  228980450410000 
n^{5}  890733952094900000 
Nth Root
^{y}√n^{2}√n  62.369864518051 

^{3}√n  15.72714413907 
^{4}√n  7.8974593710921 
^{5}√n  5.2238406461304 
3890 as geometric shapes
Circle
Radius = nDiameter  7780 

Circumference  24441.590844929 
Area  47538894.193386 
Sphere
Radius = nVolume  246568397883.03 

Surface area  190155576.77354 
Circumference  24441.590844929 
Square
Length = nPerimeter  15560 

Area  15132100 
Diagonal  5501.2907576313 
Cube
Length = nSurface area  90792600 

Volume  58863869000 
Space diagonal  6737.6776414429 
Equilateral Triangle
Length = nPerimeter  11670 

Area  6552391.5063033 
Altitude  3368.8388207215 
Triangular Pyramid
Length = nSurface area  26209566.025213 

Volume  6937173489.4628 
Height  3176.1716998089 
Cryptographic Hash Functions
md5  cbfe5681369338a48e2d1b63998099d6 

sha1  df4ccf660d92878bd9e419dec7018b539c63c9b5 
sha256  6903260f1db7eaa21285c528a83de6a64fe847318174b67fb3bcac932b84f3cc 
sha512  11f28561211f46eb26718d4092503cda7a86b1c711ff258db46903a9037d7b7ba171a0465390a44b99aa21b8720cc429dbe06bd13e5ebb8a95ba1f6a19921e3c 
ripemd160  7f27381edd8c3c3903559ea1636f0f9d71fac057 