Properties of the Number -87988

Eighty-Seven Thousand Nine Hundred Eighty-Eight

Basics

Value: -87989 → -87988 → -87987

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 40

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 21997

Divisors: 1, 2, 4, 21997, 43994, 87988

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011110110100

Octal: -253664

Duodecimal: -42B04

Hexadecimal: -157b4

Square: 7741888144

Square Root: 296.627712798383

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

G.f. A(x) satisfies: A(x) = 1 - ∑_k=1..4 (x·A(x))^k. A337513

Numbers k such that k and k² use only the digits 1, 4, 7, 8 and 9. A137058