Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

81389969 (number)

81389969 is an odd 8-digits composite number following 81389968 and preceding 81389970. In scientific notation, it is written as 8.1389969 × 10^7. The sum of its digits is 53. It has a total of 2 prime factors and 4 positive divisors. There are 80010420 positive integers (up to 81389969) that are relatively prime to 81389969.

Interesting facts

81389969 has 4 divisors, whose sum is 82769520
The reverse of 81389969 is 96998318
Previous prime number is 59

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 53
Digital Root 8

Name

Name	eighty-one million three hundred eighty-nine thousand nine hundred sixty-nine

Notation

Scientific notation	8.1389969 × 10^7
Engineering notation	8.1389969 × 10^6

Prime Factorization of 81389969

Prime Factorization 59 × 1379491

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81389969	Product of the distinct prime numbers

The prime factorization of 81389969 is 59 × 1379491. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 1, 84, 7, 101, 802, 6212, 4032, 37874, 69830, 785139, 957009, 3920857, 1554848, 75167631, 77586558, 1545607, 916049944, 8690671784, 1731925774

Basic calculations (n = 81389969)

Multiplication

n×y

n×2	162779938
n×3	244169907
n×4	325559876
n×5	406949845

Division

n÷y

n÷2	40694984.5
n÷3	27129989.666667
n÷3	20347492.25
n÷5	16277993.8

Exponentiation

n^y

n²	6624327053820961
n³	5.3915377355635E+23
n⁴	4.3881708915984E+31
n⁵	3.571530928339E+39

Nth Root

^y√n

²√n	9021.638930926
³√n	433.36812100733
⁴√n	94.98230851546
⁵√n	38.204469771181

Divisors of 81389969

1, 59, 1379491, 81389969

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81389968	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81389969 can be divided by 4 positive divisors. The sum of these divisors (counting 81389969) is 1, the average is 0.25.

Base conversion 81389969

Base	System	Value
2	Binary	100110110011110100110010001
3	Ternary	12200011001001022
4	Quaternary	10312132212101
5	Quinary	131313434334
6	Senary	12024245225
8	Octal	466364621
10	Decimal	81389969
12	Duodecimal	23310815
16	Hexadecimal	4d9e991
20	Vigesimal	158dei9
36	Base36	1cggwh

Cryptographic Hash Functions

md5	f3c9650c13b4425b9c9ead657214e739
sha1	9b9118a36157cb1228d967440cc934dc430ee565
sha256	4dd7b0d424ffbaa317d38a8a6f641cba273b8e42038fb58e4b3955208c29b239
sha512	c28f00144e6628e6ea71d71321ff43793fc7fb1279d8e101bbfcbe5ffbaae1e4bcf903dc172bfbed23704ac387c62067583b14d1d736578b3e049b94e70eec58
ripemd-160	5389d3f9f0a54fb8b5b533cca5efa78b8703cf36

81389969 as geometric shapes

Circle

Radius = n

Diameter	162779938
Circumference	511388257.3726
Area	2.081093720726E+16

Sphere

Radius = n

Volume	2.2584020455465E+24
Surface area	8.324374882904E+16
Circumference	511388257.3726

Square

Length = n

Perimeter	325559876
Area	6624327053820961
Diagonal	115102798.00093

Cube

Length = n

Surface area	39745962322925766
Volume	5.3915377355635E+23
Space diagonal	140971561.53446

Equilateral Triangle

Length = n

Perimeter	244169907
Area	2.8684177557927E+15
Altitude	70485780.767228

Triangular Pyramid

Length = n

Surface area	2.8684177557927E+15
Volume	6.3539881564002E+22
Height	38367599.333642