39921 is an odd 5-digits composite number following 39920
and preceding 39922 . In scientific notation, it is written as 3.9921 × 10^4.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 22800 positive integers (up to 39921) that are relatively prime to 39921.
39921 has 8 divisors, whose sum is 60864
The reverse of 39921 is 12993
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 24
Digital Root 6
Name
thirty-nine thousand nine hundred twenty-one
Scientific notation
3.9921 × 10^4
Engineering notation
3.9921 × 10^3
Prime Factorization
3 × 7 × 1901
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
39921
Product of the distinct prime numbers
The prime factorization of 39921 is 3 × 7 × 1901.
Since it has a total of 3 prime factors.
8 , 1 , 51 , 30 , 496 , 163 , 8264 , 2113 , 1736 , 94313 , 415905 , 572335 , 6755128 , 3027046 , 34220426 , 69793315 , 133111168 , 841188121 , 9795693594 , 4166922111
n×2
79842
n×3
119763
n×4
159684
n×5
199605
n÷2
19960.5
n÷3
13307
n÷3
9980.25
n÷5
7984.2
n2
1593686241
n3
63621548426961
n4
2539835834752710081
n5
1.0139278635916E+23
2 √n
199.80240238796
3 √n
34.176989411785
4 √n
14.135147766754
5 √n
8.3222408877843
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
-39920
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 39921 can be divided by 8 positive divisors.
The sum of these divisors (counting 39921) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101111110001
3
Ternary
2000202120
4
Quaternary
21233301
5
Quinary
2234141
6
Senary
504453
8
Octal
115761
10
Decimal
39921
12
Duodecimal
1b129
16
Hexadecimal
9bf1
20
Vigesimal
4jg1
36
Base36
usx
md5
4bb1ec1ff58ad39558e8468054bfc469
sha1
db61c57bffc6b280ee84af6e20ee9441fdb6536b
sha256
86ced86bc52bfb3b35f26e8199fcb42b68d2cd16934336f9042dc6ca50a1ab78
sha512
1f4f8d3d883c95b9f7d870af2dee8ad0feeaf35f157515f9b3278f33b90a009503b43938a72e7c9b1afee8a955d813c3fed5a25453df6675bfa49c10888c69a2
ripemd-160
7ecf8a66c38de6b2d6976cf411bd5ffa4eb278b8
Diameter
79842
Circumference
250831.04064792
Area
5006712986.8527
Volume
2.664973188642E+14
Surface area
20026851947.411
Circumference
250831.04064792
Perimeter
159684
Area
1593686241
Diagonal
56456.819623496
Surface area
9562117446
Volume
63621548426961
Space diagonal
69145.200288957
Perimeter
119763
Area
690086385.18386
Altitude
34572.600144479
Surface area
690086385.18386
Volume
7497871387048.7
Height
18818.939874499