Properties of the Number 9913

Nine Thousand Nine Hundred Thirteen

Basics

Value: 9912 → 9913 → 9914

Parity: odd

Prime: No

Previous Prime: 9907

Next Prime: 9923

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 23 × 431

Divisors: 1, 23, 431, 9913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011010111001

Octal: 23271

Duodecimal: 58A1

Hexadecimal: 26b9

Square: 98267569

Square Root: 99.56404973684026

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 for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes. A7811

Triangle read by rows: T(n,m) (n >= m >= 1) = number of vertices formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares. A331453

Coefficients of the generalized continued fraction expansion of the inverse of Euler constant, 1/γ = a(1) +a(1)/(a(2) +a(2)/(a(3) +a(3)/(a(4) +a(4)/....))). A233585

Numerator of sum of reciprocals of all divisors of all positive integers <= n. A284648

Product of n and the sum of all divisors of all positive integers <= n. A256533

Cycle of the inventory sequence (as in A063850) starting with n consists of prime numbers. A78970

a(n) = n·prime(prime(n)). A80697

Number of sets of lists of [n] such that no list is longer than than the total number of lists. A386474

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 44 ones. A31812

Largest number that is not the sum of five n-gonal numbers. A118367