644920489 is an odd 9-digits prime number following 644920488
and preceding 644920490 . In scientific notation, it is written as 6.44920489 × 10^8.
The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors.
There are 644920488 positive integers (up to 644920489) that are relatively prime to 644920489.
644920489 has 2 divisors, whose sum is 644920490
The reverse of 644920489 is 984029446
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 46 Digital Root 1
Name
six hundred forty-four million nine hundred twenty thousand four hundred eighty-nine
Scientific notation
6.44920489 × 10^8
Engineering notation
6.44920489 × 10^6
Prime Factorization
644920489
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
644920489 Product of the distinct prime numbers
The prime factorization of 644920489 is 644920489.
Since it has a total of 1 prime factors.
2 , 5 , 28 , 90 , 427 , 209 , 261 , 2581 , 1884 , 84302 , 888010 , 12234 , 7333783 , 7615046 , 72313899 , 1986501 , 862821897 , 588694587 , 8392725997 , 9618226147
n×2
1289840978
n×3
1934761467
n×4
2579681956
n×5
3224602445
n÷2
322460244.5
n÷3
214973496.33333
n÷3
161230122.25
n÷5
128984097.8
n2
415922437131999121
n3
2.6823690154124E+26
n4
1.7299147370982E+35
n5
1.1156574581777E+44
2 √n25395.284778872
3 √n863.9767552224
4 √n159.35898085415
5 √n57.796459464263
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
644920490 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
322460245 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
25395.284798561 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999968988 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 644920489 can be divided by 2 positive divisors.
The sum of these divisors (counting 644920489) is 644920490, the average is 322460245.
Base
System
Value
2
Binary
100110011100001011010010101001
3
Ternary
1122221112100121001
4
Quaternary
212130023102221
5
Quinary
2310044423424
6
Senary
143554515001
8
Octal
4634132251
10
Decimal
644920489
12
Duodecimal
15bb95a61
16
Hexadecimal
2670b4a9
20
Vigesimal
a1af149
36
Base36
anyvu1
md5
583f425819763b875f4ec194c689d3fb
sha1
c73086b302f248ebfc058bbdd5fd8f8ff3412231
sha256
b9cae64b41a3a5cd30c0ae8fbb5fb45193959fd522b525da814dfedacdd87d16
sha512
b3e33241f362882009e4b77ca2ac8f7f2da6c0d99f327659174f8d991cda874130e543187f7e5541f0ca38374ec028ae19d9d88f7be2e2ae11f4bcc1f58fa019
ripemd-160
32b7b9ff84313a68e5cfb51f52b82207bbdbbe83
Diameter
1289840978
Circumference
4052154940.7839
Area
1.3066588729571E+18
Volume
1.1235881057382E+27
Surface area
5.2266354918282E+18
Circumference
4052154940.7839
Perimeter
2579681956
Area
415922437131999121
Diagonal
912055302.19609
Surface area
2495534622791994726
Volume
2.6823690154124E+26
Space diagonal
1117035053.7902
Perimeter
1934761467
Area
1.8009969828012E+17
Altitude
558517526.89508
Surface area
1.8009969828012E+17
Volume
3.161202200738E+25
Height
304018434.06536