639702921 is an odd 9-digits composite number following 639702920
and preceding 639702922 . In scientific notation, it is written as 6.39702921 × 10^8.
The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors.
There are 357873120 positive integers (up to 639702921) that are relatively prime to 639702921.
639702921 has 16 divisors, whose sum is 926145920
The reverse of 639702921 is 129207936
Previous prime number is 13
Is Prime? no Number parity odd Number length 9 Sum of Digits 39 Digital Root 3
Name
six hundred thirty-nine million seven hundred two thousand nine hundred twenty-one
Scientific notation
6.39702921 × 10^8
Engineering notation
6.39702921 × 10^6
Prime Factorization
3 × 121 × 13 × 135559
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
639702921 Product of the distinct prime numbers
The prime factorization of 639702921 is 3 × 121 × 13 × 135559.
Since it has a total of 4 prime factors.
9 , 6 , 98 , 60 , 860 , 947 , 6895 , 8976 , 88554 , 94104 , 544333 , 164687 , 92419 , 2741305 , 50154671 , 39949805 , 126457372 , 649213353 , 4057530606 , 4051112425
n×2
1279405842
n×3
1919108763
n×4
2558811684
n×5
3198514605
n÷2
319851460.5
n÷3
213234307
n÷3
159925730.25
n÷5
127940584.2
n2
409219827135932241
n3
2.6177911874997E+26
n4
1.6746086692116E+35
n5
1.0712520572266E+44
2 √n25292.349060536
3 √n861.64051427089
4 √n159.03568486518
5 √n57.702637793204
1 , 3 , 13 , 39 , 121 , 363 , 1573 , 4719 , 135559 , 406677 , 1762267 , 5286801 , 16402639 , 49207917 , 213234307 , 639702921
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
-639702920 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 639702921 can be divided by 16 positive divisors.
The sum of these divisors (counting 639702921) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110001000010001011110001001
3
Ternary
1122120201021102210
4
Quaternary
212020101132021
5
Quinary
2302230443141
6
Senary
143251015333
8
Octal
4610213611
10
Decimal
639702921
12
Duodecimal
15a29a549
16
Hexadecimal
26211789
20
Vigesimal
9ji2h61
36
Base36
akv1xl
md5
dd99c69af517382963fab63f3a4c383f
sha1
9da967d90c600f1bd186783c4f4fdcb79e905b36
sha256
12657787f00a1bce097559f4fa7e9db0a1f19a3b8c9e1019a550208cf0e50f95
sha512
db16d6bec411ff5fa449b32c85315d2d6ccd52afafec42b3dc5cf5a4ea4ae1d77295685068dc56320cf601bc18924d69595d39f7771718efaa5b70f7f37aef0e
ripemd-160
d4d7bc4b486d2ceaeb8f57df6b271494faee5739
Diameter
1279405842
Circumference
4019371994.1871
Area
1.2856020026335E+18
Volume
1.0965378084375E+27
Surface area
5.1424080105341E+18
Circumference
4019371994.1871
Perimeter
2558811684
Area
409219827135932241
Diagonal
904676546.76788
Surface area
2455318962815593446
Volume
2.6177911874997E+26
Space diagonal
1107997960.9222
Perimeter
1919108763
Area
1.77197383016E+17
Altitude
553998980.46111
Surface area
1.77197383016E+17
Volume
3.0850965006857E+25
Height
301558848.92263