Properties of the Number 40891

Forty Thousand Eight Hundred Ninety-One

Basics

Value: 40890 → 40891 → 40892

Parity: odd

Prime: No

Previous Prime: 40883

Next Prime: 40897

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 103 × 397

Divisors: 1, 103, 397, 40891

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001111110111011

Octal: 117673

Duodecimal: 1B7B7

Hexadecimal: 9fbb

Square: 1672073881

Square Root: 202.21523186941187

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

Start with a single pentagon; at n-th generation add a pentagon at each expandable vertex (this is the "vertex to side" version); a(n) is the sum of all label values at n-th generation. (See comment for construction rules.) A247904

a(n) is the smallest composite squarefree number k such that (p+n) | (k-1) for every prime p dividing k. A274445

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 51 ones. A31819

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (1, 0, -1), (1, 0, 1), (1, 1, -1)}. A149360

Number of length n strings on the alphabet {0,1,2,3} with digit sum at most 4. A363256

Continued fraction for sqrt(922). A40891

Number of nX4 0..1 arrays with each 1 adjacent to 0, 2 or 3 king-move neighboring 1s. A296670