Properties of the Number -18399

Eighteen Thousand Three Hundred Ninety-Nine

Basics

Value: -18400 → -18399 → -18398

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

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

Today's Target

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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