Properties of the Number -9999999999

Nine Hundred Ninety-Nine Million Nine Hundred Ninety-Nine Thousand Nine Hundred Ninety-Nine

Basics

Value: -10000000000 → -9999999999 → -9999999998

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 90

Digital Root: 9

Palindrome: Yes

Factorization: 3 ² × 11 × 41 × 271 × 9091

Divisors: 1, 3, 9, 11, 33, 41, 99, 123, 271, 369

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -1001010100000010111110001111111111

Octal: -112402761777

Duodecimal: -1B30B91053

Hexadecimal: -2540be3ff

Square: 99999999980000000001

Square Root: 99999.999995

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

a(n) = 1 - n¹⁰. A24008

a(n) = 10ⁿ - 1. A2283

Replacing each term of this sequence S with its digit-sum produces a new sequence S' such that S' and S share the same succession of digits. A302656

a(n) = nⁿ - 1. A48861

a(n)³ is smallest cube containing exactly n 9's. A48374

a(n)*n = A112909(n). A112910

Largest number whose cube has n digits. A61439

Copies of 1 and 9 alternately such that every partial concatenation is a prime. A110780

Largest number whose square has n digits. A49416

Numbers k such that the digits of sqrt(k) begin with k. A307371