Properties of the Number 91391

Ninety-One Thousand Three Hundred Ninety-One

Basics

Value: 91390 → 91391 → 91392

Parity: odd

Prime: No

Previous Prime: 91387

Next Prime: 91393

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 59 × 1549

Divisors: 1, 59, 1549, 91391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010011111111

Octal: 262377

Duodecimal: 44A7B

Hexadecimal: 164ff

Square: 8352314881

Square Root: 302.3094441131471

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

a(n) = 1 + (6 + (11 + (6 + n)*n)*n)*n/24. A145126

G.f.: ∑_{n >= 1} xⁿ/(1-xⁿ)⁵. A73570

a(n) = ∑_d∣n (-1)^n/d-1 * binomial(d+3,4). A366814

a(n) = C(n,a)+C(n,b)+C(n,c)... where n = abc... are the decimal digits of n. A111696

Array read by antidiagonals: T(n,k) is the number of unlabeled k-gonal cacti having n polygons. A332649

Aronson's mod 17 sequence: "T is the first, fourth, eleventh, sixteenth, seventh, ... letter in this sentence, not counting spaces and commas and all mod 17". A91391