639968981 (number)

639968981 is an odd 9-digits composite number following 639968980 and preceding 639968982. In scientific notation, it is written as 6.39968981 × 10^8. The sum of its digits is 59. It has a total of 2 prime factors and 4 positive divisors. There are 639874092 positive integers (up to 639968981) that are relatively prime to 639968981.

Interesting facts

Basic properties

Name

Name six hundred thirty-nine million nine hundred sixty-eight thousand nine hundred eighty-one

Notation

Scientific notation 6.39968981 × 10^8
Engineering notation 6.39968981 × 10^6

Prime Factorization of 639968981

Prime Factorization 7307 × 87583

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 639968981
Product of the distinct prime numbers

The prime factorization of 639968981 is 7307 × 87583. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 639968981)

Multiplication

n×y
n×2 1279937962
n×3 1919906943
n×4 2559875924
n×5 3199844905

Division

n÷y
n÷2 319984490.5
n÷3 213322993.66667
n÷3 159992245.25
n÷5 127993796.2

Exponentiation

ny
n2 409560296642178361
n3 2.6210588570015E+26
n4 1.6773963658563E+35
n5 1.0734816429902E+44

Nth Root

y√n
2√n 25297.608207101
3√n 861.75995320247
4√n 159.05221849161
5√n 57.707436836589

Divisors of 639968981

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 -639968980
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 639968981 can be divided by 4 positive divisors. The sum of these divisors (counting 639968981) is 1, the average is 0.25.

Base conversion 639968981

Base System Value
2 Binary 100110001001010010011011010101
3 Ternary 1122121012210101212
4 Quaternary 212021102123111
5 Quinary 2302313001411
6 Senary 143300431205
8 Octal 4611223325
10 Decimal 639968981
12 Duodecimal 15a3a8505
16 Hexadecimal 262526d5
20 Vigesimal 9jjg291
36 Base36 al0r85

Cryptographic Hash Functions

md5 9a038e2b5f4a8c8758b3d46b6ce3f4c0
sha1 5546984f409fed346759baa676c02d6fbb577571
sha256 f576ff5e457fe74a6da78244d1e67e9834977a53d3ed95cf3653e91bac5ad4d5
sha512 f13140f6a606e1071959d195bc8bc6b54da9ab720a7cba5d3eaeb9857146c022e61e43137ffe3fe5a394cfd4f5e476a47f6e966287ccb4c7bad233715a39e65e
ripemd-160 ec0bda57290af5e9baeacef50cd84af1a51a2b2d

639968981 as geometric shapes

Circle

Radius = n
Diameter 1279937962
Circumference 4021043698.4699
Area 1.2866716191331E+18

Sphere

Radius = n
Volume 1.0979065666377E+27
Surface area 5.1466864765325E+18
Circumference 4021043698.4699

Square

Length = n
Perimeter 2559875924
Area 409560296642178361
Diagonal 905052812.42829

Cube

Length = n
Surface area 2457361779853070166
Volume 2.6210588570015E+26
Space diagonal 1108458790.3601

Equilateral Triangle

Length = n
Perimeter 1919906943
Area 1.7734481063681E+17
Altitude 554229395.18004

Triangular Pyramid

Length = n
Surface area 1.7734481063681E+17
Volume 3.0889474861247E+25
Height 301684270.80943