Properties of the Number -1229

Two Hundred Twenty-Nine

Basics

Value: -1230 → -1229 → -1228

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 1229

Divisors: 1, 1229

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011001101

Octal: -2315

Duodecimal: -865

Hexadecimal: -4cd

Square: 1510441

Square Root: 35.05709628591621

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

Expansion of 1/(1-x+2·x³). A77950

Matrix inverse of triangle A055898. A55905

Numbers k such that 4·k + 3 is a perfect cube, sorted by absolute values. A305291

Let (e·y)^e·x = (e·x)^e·y, y <> x. Numerators of Taylor coefficients of y about x=1. A328124

a(n)=-a(n-1)+2a(n-3). A137426

Values of n such that L(5) and N(5) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A226925

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 193", based on the 5-celled von Neumann neighborhood. A270688

Lesser of twin primes. A1359

Sophie Germain primes p: 2p+1 is also prime. A5384

Primes having only {1, 2, 9} as digits. A385776