389991 is an odd 6-digits composite number following 389990
and preceding 389992 . In scientific notation, it is written as 3.89991 × 10^5.
The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors.
There are 222264 positive integers (up to 389991) that are relatively prime to 389991.
389991 has 16 divisors, whose sum is 608000
The reverse of 389991 is 199983
Previous prime number is 49
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 39
Digital Root 3
Name
three hundred eighty-nine thousand nine hundred ninety-one
Scientific notation
3.89991 × 10^5
Engineering notation
3.89991 × 10^3
Prime Factorization
3 × 7 × 49 × 379
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
389991
Product of the distinct prime numbers
The prime factorization of 389991 is 3 × 7 × 49 × 379.
Since it has a total of 4 prime factors.
9 , 9 , 26 , 12 , 659 , 375 , 1987 , 7627 , 36756 , 83835 , 279545 , 69223 , 3214336 , 4942626 , 80444719 , 30083456 , 753388409 , 298310593 , 793657120 , 7074943602
n×2
779982
n×3
1169973
n×4
1559964
n×5
1949955
n÷2
194995.5
n÷3
129997
n÷3
97497.75
n÷5
77998.2
n2
152092980081
n3
59314893394769271
n4
2.3132274589919E+22
n5
9.0213788995973E+27
2 √n
624.49259403135
3 √n
73.060873725261
4 √n
24.989849820104
5 √n
13.128373292051
1 , 3 , 7 , 21 , 49 , 147 , 343 , 379 , 1029 , 1137 , 2653 , 7959 , 18571 , 55713 , 129997 , 389991
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
-389990
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 389991 can be divided by 16 positive divisors.
The sum of these divisors (counting 389991) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1011111001101100111
3
Ternary
201210222010
4
Quaternary
1133031213
5
Quinary
44434431
6
Senary
12205303
8
Octal
1371547
10
Decimal
389991
12
Duodecimal
169833
16
Hexadecimal
5f367
20
Vigesimal
28ejb
36
Base36
8cx3
md5
061074331b346cff0ac4052ae91b9a95
sha1
be20a400474ab22260a4e1f9dc8c28833617e2d1
sha256
eb19a49c777cf436c7cddec65d5f80fea1bf4b662b45003c067e16389246f835
sha512
2a39a5648add96d1074b5fae5df14c8f623cbd4baf267ee98fea79f53cc221f9b2ba4d9db61e4ab7f413a27fb36a7e228ee48771faa327915d3f241f16df29ab
ripemd-160
0876f1d6eb90e0c6f61dd3a8c8e8431a31fc0614
Diameter
779982
Circumference
2450385.7211323
Area
477814188885.05
Volume
2.4845764444996E+17
Surface area
1911256755540.2
Circumference
2450385.7211323
Perimeter
1559964
Area
152092980081
Diagonal
551530.56140345
Surface area
912557880486
Volume
59314893394769271
Space diagonal
675484.22649459
Perimeter
1169973
Area
65858192243.713
Altitude
337742.1132473
Surface area
65858192243.713
Volume
6.9903272241331E+15
Height
183843.52046782