Properties of the Number 39912

Thirty-Nine Thousand Nine Hundred Twelve

Basics

Value: 39911 → 39912 → 39913

Parity: even

Prime: No

Previous Prime: 39901

Next Prime: 39929

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 1663

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 1663, 3326

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001101111101000

Octal: 115750

Duodecimal: 1B120

Hexadecimal: 9be8

Square: 1592967744

Square Root: 199.7798788667167

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

Triangle T, read by rows, where column k equals the eigensequence of matrix power T^k. A125653

Column 2 of triangle A125653; also equals the eigensequence of the matrix square of A125653. A125655

Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of ∏_j=0..k (1 + j·x)/(1 - j·x). A383900

Expansion of ∏_k=0..3 (1 + k·x)/(1 - k·x). A383910

Numbers having four 6's in base 9. A43480

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 3 which is flat, i.e., with all blocks in parallel position and symmetric after a rotation by 180 degrees. A123773

Triangle related to number of compositions of n into relatively prime summands. A39912

Number of (n+1)X2 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing. A205057