Properties of the Number 39481

Thirty-Nine Thousand Four Hundred Eighty-One

Basics

Value: 39480 → 39481 → 39482

Parity: odd

Prime: No

Previous Prime: 39461

Next Prime: 39499

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 13 × 3037

Divisors: 1, 13, 3037, 39481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001101000111001

Octal: 115071

Duodecimal: 1AA21

Hexadecimal: 9a39

Square: 1558749361

Square Root: 198.69826370655582

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

Four-column table read by rows: number of nonisomorphic systems of catafusenes in an example (see Cyvin et al. (1994) for precise definition). A121178

E.g.f. satisfies: A(x) = exp( ∑_n>=0 a(n)*x²ⁿ⁺¹/(2n+1)! ). A138314

a(n) = 32·n² - 56·n + 25. A272129

Number of nonisomorphic systems of catafusenes in an example in Cyvin et al. (1994) with two appendages to the core indexed by the total number of hexagons in the appendages. A45903

Strong pseudoprimes to base 73. A20299

Number of length 7+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third. A248440

Length of cycle in trajectory of P under the 'Px+1' map, where P = n-th prime, or -1 if trajectory does not cycle. A57690

Starts of runs of 4 consecutive lazy-Pell-Niven numbers (A352342). A352345

Numbers whose base-11 representation has the same nonzero number of 5's and 9's. A39481