Properties of the Number 38906

Thirty-Eight Thousand Nine Hundred Six

Basics

Value: 38905 → 38906 → 38907

Parity: even

Prime: No

Previous Prime: 38903

Next Prime: 38917

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 ² × 397

Divisors: 1, 2, 7, 14, 49, 98, 397, 794, 2779, 5558

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001011111111010

Octal: 113772

Duodecimal: 1A622

Hexadecimal: 97fa

Square: 1513676836

Square Root: 197.24603925047518

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

Numbers k such that 4^k + 2^k - 1 is prime. A98855

Number of partitions of n with ten parts in which no part occurs more than twice. A320598

G.f. A(x) satisfies A(x) = 1/(1 - x)² + x·A(x)³/(1 - x). A366179

Largest number in a 6-tuple (a,b,c,d,e,f) of positive integers satisfying the Markoff(6) equation a² + b² + c² + d² + e² + f² = 3·a*b·c*d·e*f. A227204

Two decks each have n kinds of cards, 2 of each kind. The first deck is laid out in order. The second deck is shuffled and laid out next to the first. A match occurs if a card from the second deck is next to a card of the same kind from the first deck. a(n) is the number of ways of achieving no matches. A316

Primes p such that 31 is not a square mod p. A38906

Profile of a woman, after Jean-Pierre David. A118131