Properties of the Number 39388

Thirty-Nine Thousand Three Hundred Eighty-Eight

Basics

Value: 39387 → 39388 → 39389

Parity: even

Prime: No

Previous Prime: 39383

Next Prime: 39397

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 43 × 229

Divisors: 1, 2, 4, 43, 86, 172, 229, 458, 916, 9847

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001100111011100

Octal: 114734

Duodecimal: 1A964

Hexadecimal: 99dc

Square: 1551414544

Square Root: 198.4641025475388

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

Consider all integer triples (i,j,k), j >= k > 0, with binomial(i+2,3) = j³ + k³, ordered by increasing i; sequence gives i values. A54205

G.f. A(x) satisfies ∑_n>=1 A(xⁿ - 2·xⁿ⁺¹) = x. A377102

Number of even nontotients not exceeding 2ⁿ. A72077

Numbers k such that k² contains only digits {1,4,5}. A53896

Starting positions of strings of three 4's in the decimal expansion of π. A83615

Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..6 array extended with zeros and convolved with 1,1. A222332

Number of interval posets of permutations of size n, considered up to isomorphism. A373455

Expansion of g.f. Product((1+xⁱ)/(1-xⁱ),i=1..n-1)/(1-xⁿ), with n = 6. A91774

Numbers whose base-9 representation has the same nonzero number of 5's and 7's. A39388