638996979 is an odd 9-digits composite number following 638996978
and preceding 638996980 . In scientific notation, it is written as 6.38996979 × 10^8.
The sum of its digits is 66. It has a total of 2 prime factors and 4 positive divisors.
There are 425997984 positive integers (up to 638996979) that are relatively prime to 638996979.
638996979 has 4 divisors, whose sum is 851995976
The reverse of 638996979 is 979699836
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 66
Digital Root 3
Name
six hundred thirty-eight million nine hundred ninety-six thousand nine hundred seventy-nine
Scientific notation
6.38996979 × 10^8
Engineering notation
6.38996979 × 10^6
Prime Factorization
3 × 212998993
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
638996979
Product of the distinct prime numbers
The prime factorization of 638996979 is 3 × 212998993.
Since it has a total of 2 prime factors.
2 , 8 , 1 , 44 , 999 , 140 , 1417 , 9290 , 95801 , 90954 , 172294 , 99869 , 7650867 , 4552616 , 43051959 , 85537304 , 518083480 , 284608845 , 1674487918 , 9324779807
n×2
1277993958
n×3
1916990937
n×4
2555987916
n×5
3194984895
n÷2
319498489.5
n÷3
212998993
n÷3
159749244.75
n÷5
127799395.8
n2
408317139171126441
n3
2.6091341840427E+26
n4
1.6672288614089E+35
n5
1.0653542057419E+44
2 √n
25278.389565002
3 √n
861.32344411431
4 √n
158.99179087299
5 √n
57.689896657539
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
-638996978
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 638996979 can be divided by 4 positive divisors.
The sum of these divisors (counting 638996979) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110000101100101000111110011
3
Ternary
1122112101102001210
4
Quaternary
212011211013303
5
Quinary
2302040400404
6
Senary
143223531203
8
Octal
4605450763
10
Decimal
638996979
12
Duodecimal
159bb9b03
16
Hexadecimal
261651f3
20
Vigesimal
9jdec8j
36
Base36
akfx83
md5
8e13d6908c825d0445fe47cf6379ecab
sha1
846d28ca09b86d988fc34f563e2b4f14d4622fa9
sha256
31a54ecec6a26c82657098b8d05a4190aefc95415f97cf0c75291507b54b8667
sha512
84e8e7195019199faceaa9d81e6be3c02fb13323119b02b2a1231caf645f8cc7ad12cb6e2e584be7e9d4668c28a9062238789f1064ecc62de2002361a04ebc6a
ripemd-160
6dc370ede35415fae28a6714f8db9a84226691a8
Diameter
1277993958
Circumference
4014936429.7849
Area
1.2827661247548E+18
Volume
1.0929115713091E+27
Surface area
5.1310644990192E+18
Circumference
4014936429.7849
Perimeter
2555987916
Area
408317139171126441
Diagonal
903678194.01724
Surface area
2449902835026758646
Volume
2.6091341840427E+26
Space diagonal
1106775233.511
Perimeter
1916990937
Area
1.7680650766139E+17
Altitude
553387616.75551
Surface area
1.7680650766139E+17
Volume
3.0748941242704E+25
Height
301226064.67241