639943721 (number)

639943721 is an odd 9-digits composite number following 639943720 and preceding 639943722. In scientific notation, it is written as 6.39943721 × 10^8. The sum of its digits is 44. It has a total of 2 prime factors and 4 positive divisors. There are 639443652 positive integers (up to 639943721) that are relatively prime to 639943721.

Interesting facts

Basic properties

Name

Name six hundred thirty-nine million nine hundred forty-three thousand seven hundred twenty-one

Notation

Scientific notation 6.39943721 × 10^8
Engineering notation 6.39943721 × 10^6

Prime Factorization of 639943721

Prime Factorization 1283 × 498787

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 639943721
Product of the distinct prime numbers

The prime factorization of 639943721 is 1283 × 498787. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 639943721)

Multiplication

n×y
n×2 1279887442
n×3 1919831163
n×4 2559774884
n×5 3199718605

Division

n÷y
n÷2 319971860.5
n÷3 213314573.66667
n÷3 159985930.25
n÷5 127988744.2

Exponentiation

ny
n2 409527966047325841
n3 2.6207485044589E+26
n4 1.6771315497486E+35
n5 1.0732698045526E+44

Nth Root

y√n
2√n 25297.10894549
3√n 861.74861497439
4√n 159.05064899424
5√n 57.706981279237

Divisors of 639943721

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -639943720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 639943721 can be divided by 4 positive divisors. The sum of these divisors (counting 639943721) is 1, the average is 0.25.

Base conversion 639943721

Base System Value
2 Binary 100110001001001100010000101001
3 Ternary 1122121011111202022
4 Quaternary 212021030100221
5 Quinary 2302311144341
6 Senary 143300114225
8 Octal 4611142051
10 Decimal 639943721
12 Duodecimal 15a395975
16 Hexadecimal 2624c429
20 Vigesimal 9jjcj61
36 Base36 al07qh

Cryptographic Hash Functions

md5 fe0121ad1374050064671bd9e941122c
sha1 05ef3e7a1cbe955ef7f9c94192e7210102145788
sha256 7981ae59270c1da9693a7a99d30a615dc3fb399afa42c8d0491baf6acc08e2c8
sha512 3a7bbe1c22c7339f53764c20a4e47eca0d61aa8da8884eaf764c8094727b5ff38e5d4df9cb9860c51954d683aa9e8a46c1614e4185d114f9866b46e7b6274306
ripemd-160 402d693d15f778a6fb1f702c9efd92676f8a4709

639943721 as geometric shapes

Circle

Radius = n
Diameter 1279887442
Circumference 4020884985.209
Area 1.2865700495738E+18

Sphere

Radius = n
Volume 1.0977765664686E+27
Surface area 5.1462801982954E+18
Circumference 4020884985.209

Square

Length = n
Perimeter 2559774884
Area 409527966047325841
Diagonal 905017089.3937

Cube

Length = n
Surface area 2457167796283955046
Volume 2.6207485044589E+26
Space diagonal 1108415038.7567

Equilateral Triangle

Length = n
Perimeter 1919831163
Area 1.7733081107858E+17
Altitude 554207519.37834

Triangular Pyramid

Length = n
Surface area 1.7733081107858E+17
Volume 3.0885817321456E+25
Height 301672363.13123