Properties of the Number 90044

Ninety Thousand Forty-Four

Basics

Value: 90043 → 90044 → 90045

Parity: even

Prime: No

Previous Prime: 90031

Next Prime: 90053

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 22511

Divisors: 1, 2, 4, 22511, 45022, 90044

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111110111100

Octal: 257674

Duodecimal: 44138

Hexadecimal: 15fbc

Square: 8107921936

Square Root: 300.07332437256065

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Decimal expansion of 8/π². A217739

Number of perfect powers between consecutive squares n² and (n+1)². A117896

Iterate the morphism 1->122, 2->1112 starting with 1. A212810

a(n) = number of different ways to seat a set of n married male-female couples at a round table so that men and women alternate and every man is separated by at least d = 2 men from his wife. A267060

Triangle read by rows: T(n,k) = A083093 with 1's and 2's interchanged. A90044

Iterate the morphism 1->1123, 2->223, 3->133 starting with 1. A212811

Decimal expansion of π*BesselY(0,2)/(2·BesselJ(0,2)) - γ, where BesselJ and BesselY are the Bessel functions of the first and second kind, respectively, and γ is Euler's constant (A001620). A337981