81409939 (number)

81409939 is an odd 8-digits composite number following 81409938 and preceding 81409940. In scientific notation, it is written as 8.1409939 × 10^7. The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors. There are 74402400 positive integers (up to 81409939) that are relatively prime to 81409939.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred nine thousand nine hundred thirty-nine

Notation

Scientific notation 8.1409939 × 10^7
Engineering notation 8.1409939 × 10^6

Prime Factorization of 81409939

Prime Factorization 13 × 101 × 62003

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81409939
Product of the distinct prime numbers

The prime factorization of 81409939 is 13 × 101 × 62003. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 9, 65, 61, 417, 524, 9290, 2198, 44479, 29012, 266720, 417991, 2961128, 6489884, 78124572, 12393739, 453921089, 14432011, 1617839345, 3137901299

Basic calculations (n = 81409939)

Multiplication

n×y
n×2 162819878
n×3 244229817
n×4 325639756
n×5 407049695

Division

n÷y
n÷2 40704969.5
n÷3 27136646.333333
n÷3 20352484.75
n÷5 16281987.8

Exponentiation

ny
n2 6627578167983721
n3 5.3955073437329E+23
n4 4.3924792372734E+31
n5 3.575914667652E+39

Nth Root

y√n
2√n 9022.7456464205
3√n 433.40356212193
4√n 94.988134240128
5√n 38.206344371707

Divisors of 81409939

1, 13, 101, 1313, 62003, 806039, 6262303, 81409939

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 -81409938
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 81409939 can be divided by 8 positive divisors. The sum of these divisors (counting 81409939) is 1, the average is 0.125.

Base conversion 81409939

Base System Value
2 Binary 100110110100011011110010011
3 Ternary 12200012001102221
4 Quaternary 10312203132103
5 Quinary 131320104224
6 Senary 12024521511
8 Octal 466433623
10 Decimal 81409939
12 Duodecimal 23320297
16 Hexadecimal 4da3793
20 Vigesimal 158g4gj
36 Base36 1cgwb7

Cryptographic Hash Functions

md5 3bc49315d22c3e21a5984592467b4bdf
sha1 e51130800d0297f1882d34745bc4a347236d26fa
sha256 0f57a74078237356358226941917ccf6c8835a8bf651518af4297608d0a28e49
sha512 9c78088e2184e51914f7095f6192a37cb9f97707adad9b4210e9213225e13d14e058ac0f65055d3f98e4e074b18ab1eaea2de50df9701240fdb7b2804672951e
ripemd-160 19656716798501f6785055fef6569d576951e788

81409939 as geometric shapes

Circle

Radius = n
Diameter 162819878
Circumference 511513732.58319
Area 2.082115088363E+16

Sphere

Radius = n
Volume 2.2600648311281E+24
Surface area 8.3284603534519E+16
Circumference 511513732.58319

Square

Length = n
Perimeter 325639756
Area 6627578167983721
Diagonal 115131039.84577

Cube

Length = n
Surface area 39765469007902326
Volume 5.3955073437329E+23
Space diagonal 141006150.58908

Equilateral Triangle

Length = n
Perimeter 244229817
Area 2.8698255295205E+15
Altitude 70503075.294542

Triangular Pyramid

Length = n
Surface area 2.8698255295205E+15
Volume 6.3586663844922E+22
Height 38377013.281922