81479939 is an odd 8-digits prime number following 81479938
and preceding 81479940 . In scientific notation, it is written as 8.1479939 × 10^7.
The sum of its digits is 50. It has a total of 1 prime factors and 2 positive divisors.
There are 81479938 positive integers (up to 81479939) that are relatively prime to 81479939.
81479939 has 2 divisors, whose sum is 81479940
The reverse of 81479939 is 93997418
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 50 Digital Root 5
Name
eighty-one million four hundred seventy-nine thousand nine hundred thirty-nine
Scientific notation
8.1479939 × 10^7
Engineering notation
8.1479939 × 10^6
Prime Factorization
81479939
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81479939 Product of the distinct prime numbers
The prime factorization of 81479939 is 81479939.
Since it has a total of 1 prime factors.
6 , 2 , 40 , 44 , 584 , 838 , 2496 , 9148 , 77111 , 20326 , 910470 , 982982 , 6615303 , 5017047 , 94341472 , 80330809 , 534459484 , 687578634 , 2874225418 , 3775878214
n×2
162959878
n×3
244439817
n×4
325919756
n×5
407399695
n÷2
40739969.5
n÷3
27159979.666667
n÷3
20369984.75
n÷5
16295987.8
n2
6638980459443721
n3
5.4094372285767E+23
n4
4.4076061540876E+31
n5
3.5913148057108E+39
2 √n9026.6238982246
3 √n433.5277466235
4 √n95.008546448331
5 √n38.212912426588
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81479940 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40739970 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9026.6239536163 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999754541 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81479939 can be divided by 2 positive divisors.
The sum of these divisors (counting 81479939) is 81479940, the average is 40739970.
Base
System
Value
2
Binary
100110110110100100100000011
3
Ternary
12200022121110112
4
Quaternary
10312310210003
5
Quinary
131324324224
6
Senary
12030221535
8
Octal
466644403
10
Decimal
81479939
12
Duodecimal
233548ab
16
Hexadecimal
4db4903
20
Vigesimal
1594jgj
36
Base36
1ciebn
md5
c8b75da349e8d7402c81cce975e75dda
sha1
c53e695689c94611643187071606c2162b6d6b73
sha256
8b55b5731ea924dc4ea6e5f83cfdf6365c427d55e15ded8d839a3e42f2a4640a
sha512
9ec2b132e1f975a605719d226119c35959af0109d529000f5f12c18ac3739f576dc3608db26d28b91a5309257523d332beb1a96b5fd94a1f8feebcdf5a68a659
ripemd-160
af70464412d49fb353d0d139985b8777c3d20c9e
Diameter
162959878
Circumference
511953555.55469
Area
2.0856972238715E+16
Volume
2.2658997676469E+24
Surface area
8.3427888954858E+16
Circumference
511953555.55469
Perimeter
325919756
Area
6638980459443721
Diagonal
115230034.79513
Surface area
39833882756662326
Volume
5.4094372285767E+23
Space diagonal
141127394.14561
Perimeter
244439817
Area
2.8747628665534E+15
Altitude
70563697.072806
Surface area
2.8747628665534E+15
Volume
6.3750829112159E+22
Height
38410011.598377