639863721 (number)

639863721 is an odd 9-digits composite number following 639863720 and preceding 639863722. In scientific notation, it is written as 6.39863721 × 10^8. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 365394240 positive integers (up to 639863721) that are relatively prime to 639863721.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.39863721 × 10^8
Engineering notation 6.39863721 × 10^6

Prime Factorization of 639863721

Prime Factorization 63 × 2287 × 4441

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 639863721
Product of the distinct prime numbers

The prime factorization of 639863721 is 63 × 2287 × 4441. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 639863721)

Multiplication

n×y
n×2 1279727442
n×3 1919591163
n×4 2559454884
n×5 3199318605

Division

n÷y
n÷2 319931860.5
n÷3 213287907
n÷3 159965930.25
n÷5 127972744.2

Exponentiation

ny
n2 409425581451965841
n3 2.6197657602044E+26
n4 1.6762930674728E+35
n5 1.0725991196397E+44

Nth Root

y√n
2√n 25295.527687716
3√n 861.71270412792
4√n 159.04567799131
5√n 57.705538405679

Divisors of 639863721

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -639863720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 639863721 can be divided by 8 positive divisors. The sum of these divisors (counting 639863721) is 1, the average is 0.125.

Base conversion 639863721

Base System Value
2 Binary 100110001000111000101110101001
3 Ternary 1122121000110000100
4 Quaternary 212020320232221
5 Quinary 2302301114341
6 Senary 143254300013
8 Octal 4610705651
10 Decimal 639863721
12 Duodecimal 15a357609
16 Hexadecimal 26238ba9
20 Vigesimal 9jj2j61
36 Base36 akyi09

Cryptographic Hash Functions

md5 9dafdd297bc1bf91881fb1768f8730b2
sha1 92553d4f28d63f77f11f9cf8cc9e8333d7d945e1
sha256 136c5dd565262a66c920539fb35a39a2a98fda671bbf8bd5fae9a6ad0d574df6
sha512 be55ff026318c06e48e3fc4a870c0d515d369edbda6b35e536dc0d0007ec4d37c082cc54acb228d68d2af0ef3562482c976cfcaaa29771b5167d59fd86ca8af3
ripemd-160 8a830a5b75013b94175940d7bbe7da22146360a0

639863721 as geometric shapes

Circle

Radius = n
Diameter 1279727442
Circumference 4020382330.3845
Area 1.2862483988812E+18

Sphere

Radius = n
Volume 1.0973649155179E+27
Surface area 5.1449935955249E+18
Circumference 4020382330.3845

Square

Length = n
Perimeter 2559454884
Area 409425581451965841
Diagonal 904903952.30871

Cube

Length = n
Surface area 2456553488711795046
Volume 2.6197657602044E+26
Space diagonal 1108276474.6921

Equilateral Triangle

Length = n
Perimeter 1919591163
Area 1.7728647724831E+17
Altitude 554138237.34604

Triangular Pyramid

Length = n
Surface area 1.7728647724831E+17
Volume 3.0874235569348E+25
Height 301634650.76957