Properties of the Number 39918

Thirty-Nine Thousand Nine Hundred Eighteen

Basics

Value: 39917 → 39918 → 39919

Parity: even

Prime: No

Previous Prime: 39901

Next Prime: 39929

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 6653

Divisors: 1, 2, 3, 6, 6653, 13306, 19959, 39918

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101111101110

Octal: 115756

Duodecimal: 1B126

Hexadecimal: 9bee

Square: 1593446724

Square Root: 199.79489482967276

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

G.f.: ∑_k>=0 x^k*(k+1/2) / ∏_j=1..k (1 - x^2·j-1)². A376624

Expansion of -(sqrt(-3·x²-2·x+1)-x-1)/(2·sqrt(-3·x²-2·x+1)+2·x). A188442

Expansion of g/(1 - x²*g⁵), where g = 1+x·g² is the g.f. of A000108. A391036

Partial sums of decimal digits of π (ignoring the initial 3). A39918

Number of 3Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A284077

Maximum denominator of resistances obtained by an electrical network with n unit resistors. A340708