Properties of the Number 18399

Eighteen Thousand Three Hundred Ninety-Nine

Basics

Value: 18398 → 18399 → 18400

Parity: odd

Prime: No

Previous Prime: 18397

Next Prime: 18401

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 6133

Divisors: 1, 3, 6133, 18399

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011111011111

Octal: 43737

Duodecimal: A793

Hexadecimal: 47df

Square: 338523201

Square Root: 135.64291356351794

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

Semiprimes q such that q²-4 and q²+4 are also semiprimes. A173084

a(n) = 46·n² - 1. A158634

Generalized Catalan Numbers x⁴*A(x)² -(1-x+x⁴+x⁵+x⁶+x⁷)*A(x) + 1 =0. A23430

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 846", based on the 5-celled von Neumann neighborhood. A273689

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 90. A31588

Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically. A207246

Number of length n+5 0..2 arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms. A250330

Divisors of 336. A18399