397 is an odd 3-digits prime number following 396
and preceding 398 . In scientific notation, it is written as 3.97 × 10^2.
The sum of its digits is 19. It has a total of 1 prime factors and 2 positive divisors.
There are 396 positive integers (up to 397) that are relatively prime to 397.
397 has 2 divisors, whose sum is 398
The reverse of 397 is 793
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 3
Sum of Digits 19
Digital Root 1
Name
three hundred ninety-seven
Scientific notation
3.97 × 10^2
Engineering notation
3.97 × 10^0
Prime Factorization
397
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
397
Product of the distinct prime numbers
The prime factorization of 397 is 397.
Since it has a total of 1 prime factors.
4 , 1 , 89 , 52 , 39 , 578 , 6589 , 2040 , 84565 , 4233 , 702284 , 100248 , 7218603 , 4257496 , 52744493 , 34485966 , 698925258 , 218413568 , 8464720293 , 2135923951
n×2
794
n×3
1191
n×4
1588
n×5
1985
n÷2
198.5
n÷3
132.33333333333
n÷3
99.25
n÷5
79.4
n2
157609
n3
62570773
n4
24840596881
n5
9861716961757
2 √n
19.924858845171
3 √n
7.3495965965525
4 √n
4.4637270128415
5 √n
3.3094673537988
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
398
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
199
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
19.94993734326
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9949748743719
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 397 can be divided by 2 positive divisors.
The sum of these divisors (counting 397) is 398, the average is 199.
Base
System
Value
2
Binary
110001101
3
Ternary
112201
4
Quaternary
12031
5
Quinary
3042
6
Senary
1501
8
Octal
615
10
Decimal
397
12
Duodecimal
291
16
Hexadecimal
18d
20
Vigesimal
jh
36
Base36
b1
md5
e46de7e1bcaaced9a54f1e9d0d2f800d
sha1
20387dbb740a1024dc09b567e17ab8b8d656ec64
sha256
1d2028ddcd746a7ee87dd0739d7435602b77d4908f96e27ebdad57b09aa27b69
sha512
31debbab50e5b239e12f20d753587c053fbc39d17e10c9caf18705ab3c3ad8e0b7b7957f393cd967cda8424838ed1642c2153a160b9db0720802cdf2b779039d
ripemd-160
79c1fad78625e42049c5c87ca28cd605af51eb6d
Diameter
794
Circumference
2494.4245669503
Area
495143.27653963
Volume
262095841.04831
Surface area
1980573.1061585
Circumference
2494.4245669503
Perimeter
1588
Area
157609
Diagonal
561.44278426212
Surface area
945654
Volume
62570773
Space diagonal
687.62417060484
Perimeter
1191
Area
68246.698932531
Altitude
343.81208530242
Surface area
68246.698932531
Volume
7374036.3153974
Height
187.14759475404