Properties of the Number 89980

Eighty-Nine Thousand Nine Hundred Eighty

Basics

Value: 89979 → 89980 → 89981

Parity: even

Prime: No

Previous Prime: 89977

Next Prime: 89983

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 11 × 409

Divisors: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111101111100

Octal: 257574

Duodecimal: 440A4

Hexadecimal: 15f7c

Square: 8096400400

Square Root: 299.96666481460903

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

Row sums of the triangular array at A249057. A249059

Numbers n such that every digit of both n and n² contains a loop (only digits 0,4,6,8,9 in n and n²). A107626

a(n) = 225·n² - n. A156813

a(n) = 900·n² - 2·n. A158408

a(n) = 400·n² - 20. A158597

Numbers k such that k and k² use only the digits 0, 4, 6, 8 and 9. A136956

Array read by antidiagonals: T(n,m) = number of independent sets in the grid graph P_n X P_m. A89980