91991389 is an odd 8-digits composite number following 91991388
and preceding 91991390 . In scientific notation, it is written as 9.1991389 × 10^7.
The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors.
There are 78763200 positive integers (up to 91991389) that are relatively prime to 91991389.
91991389 has 8 divisors, whose sum is 105248448
The reverse of 91991389 is 98319919
Previous prime number is 977
Is Prime? no Number parity odd Number length 8 Sum of Digits 49 Digital Root 4
Name
ninety-one million nine hundred ninety-one thousand three hundred eighty-nine
Scientific notation
9.1991389 × 10^7
Engineering notation
9.1991389 × 10^6
Prime Factorization
7 × 977 × 13451
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
91991389 Product of the distinct prime numbers
The prime factorization of 91991389 is 7 × 977 × 13451.
Since it has a total of 3 prime factors.
1 , 10 , 51 , 96 , 418 , 18 , 3922 , 8326 , 55920 , 42043 , 907330 , 330523 , 5133746 , 5107076 , 15904148 , 82038670 , 834285403 , 199154786 , 2754523935 , 9627218869
n×2
183982778
n×3
275974167
n×4
367965556
n×5
459956945
n÷2
45995694.5
n÷3
30663796.333333
n÷3
22997847.25
n÷5
18398277.8
n2
8462415650149321
n3
7.7846936995257E+23
n4
7.1612478635892E+31
n5
6.5877313794485E+39
2 √n9591.2141567166
3 √n451.42165863988
4 √n97.934744379697
5 √n39.151592815876
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-91991388 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 91991389 can be divided by 8 positive divisors.
The sum of these divisors (counting 91991389) is 1, the average is 0.125.
Base
System
Value
2
Binary
101011110111010110101011101
3
Ternary
20102002122110111
4
Quaternary
11132322311131
5
Quinary
142022211024
6
Senary
13043410021
8
Octal
536726535
10
Decimal
91991389
12
Duodecimal
26983911
16
Hexadecimal
57bad5d
20
Vigesimal
18eii99
36
Base36
1irp0d
md5
52c894d165b36fb5fd4c2197f26a6242
sha1
3e738e2bf244d8619275678ecf154a4fddbb064a
sha256
caadbba3995c842a8914f4da56f40aac31b2029269229566fa293efcbb03a90f
sha512
9ab2ce72be587d7680da0e4ac16aef6830f249a315d251b60f94277a08c2eac6306401492a169f63da6a658e8c16e3d351c77d9114771689412dfcfb2a07f5ce
ripemd-160
f3513a257a16234f6961066c48da682a8100b2b1
Diameter
183982778
Circumference
577998943.75184
Area
2.6585462838132E+16
Volume
3.2608448715836E+24
Surface area
1.0634185135253E+17
Circumference
577998943.75184
Perimeter
367965556
Area
8462415650149321
Diagonal
130095469.94534
Surface area
50774493900895926
Volume
7.7846936995257E+23
Space diagonal
159333759.60683
Perimeter
275974167
Area
3.6643334652062E+15
Altitude
79666879.803416
Surface area
3.6643334652062E+15
Volume
9.1743495073247E+22
Height
43365156.648446