Properties of the Number 89999

Eighty-Nine Thousand Nine Hundred Ninety-Nine

Basics

Value: 89998 → 89999 → 90000

Parity: odd

Prime: No

Previous Prime: 89989

Next Prime: 90001

Digit Sum: 44

Digital Root: 8

Palindrome: No

Factorization: 7 × 13 × 23 × 43

Divisors: 1, 7, 13, 23, 43, 91, 161, 299, 301, 559

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111110001111

Octal: 257617

Duodecimal: 440BB

Hexadecimal: 15f8f

Square: 8099820001

Square Root: 299.99833332870367

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

Smallest number whose sum of digits is n. A51885

Numbers whose smallest decimal digit is 8. A284069

Maximal difference between two n-digit numbers. A109002

a(n) = n*(n + 1)*(7·n + 5)/6. A304993

Numbers k such that σ(k)/φ(k) = 16/9. A164647

Lexicographically earliest injective sequence such that a(n) = A007953(a(a(n))), where A007953 = sum of digits (in base 10). A167152

a(n) = ∑_0<j<k<=n k³-j³. A206809

a(n) is the smallest composite number with the sum of digits = the n-th composite number. A73866

a(n) = smallest multiple of 7 with a digit sum = n. A77493

Smallest number whose sum of digits is 2n. A133296