Properties of the Number 8921

Eight Thousand Nine Hundred Twenty-One

Basics

Value: 8920 → 8921 → 8922

Parity: odd

Prime: No

Previous Prime: 8893

Next Prime: 8923

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 811

Divisors: 1, 11, 811, 8921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001011011001

Octal: 21331

Duodecimal: 51B5

Hexadecimal: 22d9

Square: 79584241

Square Root: 94.45104552094699

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 that are the sum of 3 nonzero 6th powers. A3359

Number of unordered pairs of partitions of n (into distinct parts) with empty intersection. A108796

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero. A301884

Positive integers n such that 2ⁿ == 2¹¹ (mod n). A15935

Number of integer partitions with sum <= n whose distinct parts can be linearly combined using nonnegative coefficients to obtain n. A365379

T(n,k)=Number of 0..k arrays of length n with each element differing from at least one neighbor by 1 or less. A221596

Odd integers n such that 2ⁿ == 2¹¹ (mod n). A276971

Number of sets of integer-sided rectangular pieces that can tile a 2 X n rectangle. A360631

a(n) is the smallest number that is the sum of 3 nonzero squares in exactly n ways. A25414

Number of partitions of n such that (least part) < (multiplicity of greatest part). A240178