638994907 is an odd 9-digits prime number following 638994906
and preceding 638994908 . In scientific notation, it is written as 6.38994907 × 10^8.
The sum of its digits is 55. It has a total of 1 prime factors and 2 positive divisors.
There are 638994906 positive integers (up to 638994907) that are relatively prime to 638994907.
638994907 has 2 divisors, whose sum is 638994908
The reverse of 638994907 is 709499836
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 55 Digital Root 1
Name
six hundred thirty-eight million nine hundred ninety-four thousand nine hundred seven
Scientific notation
6.38994907 × 10^8
Engineering notation
6.38994907 × 10^6
Prime Factorization
638994907
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
638994907 Product of the distinct prime numbers
The prime factorization of 638994907 is 638994907.
Since it has a total of 1 prime factors.
10 , 5 , 68 , 71 , 359 , 796 , 7400 , 7156 , 54017 , 18189 , 979979 , 438331 , 1928547 , 6090836 , 51291663 , 71639136 , 703640307 , 407924165 , 8462257527 , 5300384087
n×2
1277989814
n×3
1916984721
n×4
2555979628
n×5
3194974535
n÷2
319497453.5
n÷3
212998302.33333
n÷3
159748726.75
n÷5
127798981.4
n2
408314491171938649
n3
2.6091088031317E+26
n4
1.66720723701E+35
n5
1.0653369333629E+44
2 √n25278.348581345
3 √n861.32251314272
4 √n158.99166198686
5 √n57.689859244649
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
638994908 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
319497454 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
25278.348601125 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999968701 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 638994907 can be divided by 2 positive divisors.
The sum of these divisors (counting 638994907) is 638994908, the average is 319497454.
Base
System
Value
2
Binary
100110000101100100100111011011
3
Ternary
1122112101022020001
4
Quaternary
212011210213123
5
Quinary
2302040314112
6
Senary
143223513431
8
Octal
4605444733
10
Decimal
638994907
12
Duodecimal
159bb8877
16
Hexadecimal
261649db
20
Vigesimal
9jde757
36
Base36
akfvmj
md5
784d81c0fe540fe32a7f80a7b472eada
sha1
3c657ee99ec5661abc92fa76deeaa8de28b11268
sha256
80ad6a1c9437f1e1d01e79dfdd5aba4423938cb7da47eaa599afd70de022b604
sha512
cdf4cc70b39a88646fd8330fda96e1dbccef0667a6862fccc23fad6998b7bf890544e10257cf3a7b51c549d57d3f5e9e42ca5cec929f1cb53e922ced5afc21bc
ripemd-160
a37b23ba53d369bb6c47713be0959cdc11b6db0d
Diameter
1277989814
Circumference
4014923411.025
Area
1.28275780582E+18
Volume
1.092900939778E+27
Surface area
5.1310312232801E+18
Circumference
4014923411.025
Perimeter
2555979628
Area
408314491171938649
Diagonal
903675263.76673
Surface area
2449886947031631894
Volume
2.6091088031317E+26
Space diagonal
1106771644.7017
Perimeter
1916984721
Area
1.7680536104411E+17
Altitude
553385822.35087
Surface area
1.7680536104411E+17
Volume
3.0748642125798E+25
Height
301225087.92224