644920989 (number)

644920989 is an odd 9-digits composite number following 644920988 and preceding 644920990. In scientific notation, it is written as 6.44920989 × 10^8. The sum of its digits is 51. It has a total of 4 prime factors and 16 positive divisors. There are 397343232 positive integers (up to 644920989) that are relatively prime to 644920989.

Interesting facts

Basic properties

Name

Name six hundred forty-four million nine hundred twenty thousand nine hundred eighty-nine

Notation

Scientific notation 6.44920989 × 10^8
Engineering notation 6.44920989 × 10^6

Prime Factorization of 644920989

Prime Factorization 3 × 851 × 157 × 1609

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 644920989
Product of the distinct prime numbers

The prime factorization of 644920989 is 3 × 851 × 157 × 1609. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 3, 81, 47, 756, 393, 9973, 487, 85117, 30790, 742320, 211008, 7807277, 297618, 52614245, 86064506, 498012217, 862821933, 8333054798, 9603328931

Basic calculations (n = 644920989)

Multiplication

n×y
n×2 1289841978
n×3 1934762967
n×4 2579683956
n×5 3224604945

Division

n÷y
n÷2 322460494.5
n÷3 214973663
n÷3 161230247.25
n÷5 128984197.8

Exponentiation

ny
n2 415923082052738121
n3 2.6823752542538E+26
n4 1.7299201018425E+35
n5 1.1156617829712E+44

Nth Root

y√n
2√n 25395.294623217
3√n 863.97697849967
4√n 159.35901174147
5√n 57.796468426056

Divisors of 644920989

1, 3, 157, 471, 851, 1609, 2553, 4827, 133607, 252613, 400821, 757839, 1369259, 4107777, 214973663, 644920989

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -644920988
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 644920989 can be divided by 16 positive divisors. The sum of these divisors (counting 644920989) is 1, the average is 0.0625.

Base conversion 644920989

Base System Value
2 Binary 100110011100001011011010011101
3 Ternary 1122221112101021120
4 Quaternary 212130023122131
5 Quinary 2310044432424
6 Senary 143554521153
8 Octal 4634133235
10 Decimal 644920989
12 Duodecimal 15bb961b9
16 Hexadecimal 2670b69d
20 Vigesimal a1af299
36 Base36 anyw7x

Cryptographic Hash Functions

md5 613d5f5cf43fc04d800eb2249a192b78
sha1 a76ab3ed4fe9417141a865ebcefc25db0edb05c7
sha256 c69e317ad42062b0f6c60dd9ae93a5f778a3d130f7802b0b495b823d1f2f8168
sha512 158cf37c963fe961542f80b1400a5554269d41809d09bd8d44f91f7028e44823a2446dd4096268e383144ead2eca0abf4e1fbc0731a4ee32e5139ed323340f8e
ripemd-160 4753ab15164ac86059e67e2f80c908a1a51cffd0

644920989 as geometric shapes

Circle

Radius = n
Diameter 1289841978
Circumference 4052158082.3765
Area 1.3066608990353E+18

Sphere

Radius = n
Volume 1.123590719058E+27
Surface area 5.2266435961412E+18
Circumference 4052158082.3765

Square

Length = n
Perimeter 2579683956
Area 415923082052738121
Diagonal 912056009.30287

Cube

Length = n
Surface area 2495538492316428726
Volume 2.6823752542538E+26
Space diagonal 1117035919.8156

Equilateral Triangle

Length = n
Perimeter 1934762967
Area 1.80099977539E+17
Altitude 558517959.90778

Triangular Pyramid

Length = n
Surface area 1.80099977539E+17
Volume 3.1612095532831E+25
Height 304018669.76762