991838961 is an odd 9-digits composite number following 991838960
and preceding 991838962 . In scientific notation, it is written as 9.91838961 × 10^8.
The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors.
There are 647102016 positive integers (up to 991838961) that are relatively prime to 991838961.
991838961 has 16 divisors, whose sum is 1125835200
The reverse of 991838961 is 169838199
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 54
Digital Root 9
Name
nine hundred ninety-one million eight hundred thirty-eight thousand nine hundred sixty-one
Scientific notation
9.91838961 × 10^8
Engineering notation
9.91838961 × 10^6
Prime Factorization
9 × 83 × 107 × 12409
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
991838961
Product of the distinct prime numbers
The prime factorization of 991838961 is 9 × 83 × 107 × 12409.
Since it has a total of 4 prime factors.
8 , 7 , 55 , 45 , 652 , 257 , 2725 , 5161 , 56090 , 24889 , 876642 , 754470 , 8322455 , 4478630 , 99645862 , 73899839 , 513471613 , 904144412 , 1563134482 , 8233163238
n×2
1983677922
n×3
2975516883
n×4
3967355844
n×5
4959194805
n÷2
495919480.5
n÷3
330612987
n÷3
247959740.25
n÷5
198367792.2
n2
983744524557559521
n3
9.7571614712661E+26
n4
9.6775328959698E+35
n5
9.598554172582E+44
2 √n
31493.474895603
3 √n
997.27221964662
4 √n
177.46401014178
5 √n
62.99241125548
1 , 9 , 83 , 107 , 747 , 963 , 8881 , 12409 , 79929 , 111681 , 1029947 , 1327763 , 9269523 , 11949867 , 110204329 , 991838961
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
-991838960
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 991838961 can be divided by 16 positive divisors.
The sum of these divisors (counting 991838961) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111011000111100100001011110001
3
Ternary
2120010022122021100
4
Quaternary
323013210023301
5
Quinary
4012402321321
6
Senary
242230315013
8
Octal
7307441361
10
Decimal
991838961
12
Duodecimal
2381b8a69
16
Hexadecimal
3b1e42f1
20
Vigesimal
f9ijh81
36
Base36
geiju9
md5
c7ebdf58f4754cc78716cd7d981da6ef
sha1
cda6c63be1a148e034f9d92592b6674cad55ef3a
sha256
ea6f73288180ee8a19f23be36da848d4c469d4abf494fd381748ecbcae86eb56
sha512
a69955a40afd5167c3924ebe1b254bbac09c4ac3d5fad5990fa2850f9a556fb94cd8f2f558601bfe77fdd3de56262e6969e41595a9c034a3047fd40e14a3593f
ripemd-160
d4fa5731f3df0c8d1356e354de90bff5107f2a62
Diameter
1983677922
Circumference
6231907986.8435
Area
3.0905245713592E+18
Volume
4.0870702397359E+27
Surface area
1.2362098285437E+19
Circumference
6231907986.8435
Perimeter
3967355844
Area
983744524557559521
Diagonal
1402672110.3362
Surface area
5902467147345357126
Volume
9.7571614712661E+26
Space diagonal
1717915473.3783
Perimeter
2975516883
Area
4.2597387455035E+17
Altitude
858957736.68916
Surface area
4.2597387455035E+17
Volume
1.1498925069107E+26
Height
467557370.11208