Properties of the Number 99144

Ninety-Nine Thousand One Hundred Forty-Four

Basics

Value: 99143 → 99144 → 99145

Parity: even

Prime: No

Previous Prime: 99139

Next Prime: 99149

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁶ × 17

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 17, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001101001000

Octal: 301510

Duodecimal: 49460

Hexadecimal: 18348

Square: 9829532736

Square Root: 314.8714023216462

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

Number of compositions of n with all adjacent parts (x, y) satisfying x >= 2y or y = 2x. A342335

a(n) = n⁴ - n³. A85537

Binomial transform of n²*2ⁿ/2. A77616

Number of 3-element ordered antichain covers of an unlabeled n-element set. A56074

Number of rooted planar bi-Eulerian maps with 2n edges. Bi-Eulerian: all its vertices and faces are of even valency. A69726

Numbers with prime factorization pq^3r^6. A190467

G.f. A(x) satisfies: [x^k] (1+x)^n*(n+1/2) * A(x) = 0 for k = n*(n-1)/2 + 1 through k = n*(n+1)/2 for n >= 1. A305601

a(n) = n*(n + 1)³. A85540

Expansion of g.f. ((1+x)/(1-3·x))². A113071

a(n) = number of reverse alternating fixed-point-free involutions w on 1,2,...,2n, i.e., w(1) < w(2) > w(3) < w(4) > ... < w(2n), w²=1 and w(i) ≠ i for all i. A115455