639438861 (number)

639438861 is an odd 9-digits composite number following 639438860 and preceding 639438862. In scientific notation, it is written as 6.39438861 × 10^8. The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors. There are 426226752 positive integers (up to 639438861) that are relatively prime to 639438861.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.39438861 × 10^8
Engineering notation 6.39438861 × 10^6

Prime Factorization of 639438861

Prime Factorization 3 × 24049 × 8863

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 639438861
Product of the distinct prime numbers

The prime factorization of 639438861 is 3 × 24049 × 8863. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 6, 23, 31, 549, 37, 2089, 6408, 55374, 34753, 405814, 329835, 7542035, 4504443, 25417333, 53877352, 237563378, 41396662, 9224528880, 9586574605

Basic calculations (n = 639438861)

Multiplication

n×y
n×2 1278877722
n×3 1918316583
n×4 2557755444
n×5 3197194305

Division

n÷y
n÷2 319719430.5
n÷3 213146287
n÷3 159859715.25
n÷5 127887772.2

Exponentiation

ny
n2 408882056956977321
n3 2.6145507678391E+26
n4 1.6718453650137E+35
n5 1.0690428959725E+44

Nth Root

y√n
2√n 25287.128366028
3√n 861.5219404245
4√n 159.01927042352
5√n 57.697873245631

Divisors of 639438861

1, 3, 8863, 24049, 26589, 72147, 213146287, 639438861

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 -639438860
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 639438861 can be divided by 8 positive divisors. The sum of these divisors (counting 639438861) is 1, the average is 0.125.

Base conversion 639438861

Base System Value
2 Binary 100110000111010001000000001101
3 Ternary 1122120012212012210
4 Quaternary 212013101000031
5 Quinary 2302144020421
6 Senary 143241221033
8 Octal 4607210015
10 Decimal 639438861
12 Duodecimal 15a191779
16 Hexadecimal 261d100d
20 Vigesimal 9jg9h31
36 Base36 akpe6l

Cryptographic Hash Functions

md5 ac5bec9b1a0de9b62bbd8c54f769f2b1
sha1 0f1fd9174f5ede3c2af28fe192922e56e0a38548
sha256 d549d11d21f32d5b39514138d04829e83cf9e4ff58ff449bafb29748abbfce54
sha512 257109f5aafbc25cf9ddb72ee6f78b65f4555760ca6c24e309dbb8c7925ce0f3e349e1faebaca2d37ea72ec60fd8878abec339b9daf2da01e7b3ec637084fdba
ripemd-160 6e9c61dcb76dc8d808c03024c04e3b45b071fd43

639438861 as geometric shapes

Circle

Radius = n
Diameter 1278877722
Circumference 4017712856.2748
Area 1.2845408663207E+18

Sphere

Radius = n
Volume 1.0951804646241E+27
Surface area 5.1381634652829E+18
Circumference 4017712856.2748

Square

Length = n
Perimeter 2557755444
Area 408882056956977321
Diagonal 904303109.5346

Cube

Length = n
Surface area 2453292341741863926
Volume 2.6145507678391E+26
Space diagonal 1107540595.586

Equilateral Triangle

Length = n
Perimeter 1918316583
Area 1.7705112423819E+17
Altitude 553770297.79299

Triangular Pyramid

Length = n
Surface area 1.7705112423819E+17
Volume 3.0812776294925E+25
Height 301434369.84487