Properties of the Number 6399

Six Thousand Three Hundred Ninety-Nine

Basics

Value: 6398 → 6399 → 6400

Parity: odd

Prime: No

Previous Prime: 6397

Next Prime: 6421

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 79

Divisors: 1, 3, 9, 27, 79, 81, 237, 711, 2133, 6399

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100011111111

Octal: 14377

Duodecimal: 3853

Hexadecimal: 18ff

Square: 40947201

Square Root: 79.9937497558403

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) = 4·n² - 1. A466

Generalized 19-gonal (or enneadecagonal) numbers: m*(17·m - 15)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303813

Number of integer partitions of n such that the maximum is twice the median. A361849

3 times octagonal numbers: a(n) = 3·n*(3·n-2). A152751

T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. A284222

a(1) = 9; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A46259

a(n) = 16n² + 32n + 15. A141759

A sequence of asymptotic density ζ(9) - 1, where ζ is the Riemann ζ function. A143035

Number of ways to cover (without overlapping) a ring lattice (necklace) of n sites with molecules that are 8 sites wide. A58365

T(n,k)=Number of arrangements of n+2 numbers in 0..k with each number being the sum mod (k+1) of two others. A183884