Properties of the Number 8840

Eight Thousand Eight Hundred Forty

Basics

Value: 8839 → 8840 → 8841

Parity: even

Prime: No

Previous Prime: 8839

Next Prime: 8849

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5 × 13 × 17

Divisors: 1, 2, 4, 5, 8, 10, 13, 17, 20, 26

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10001010001000

Octal: 21210

Duodecimal: 5148

Hexadecimal: 2288

Square: 78145600

Square Root: 94.02127418834527

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) = floor(n(n+2)(2n+1)/8). A2717

Every run of digits of n in base 16 has length 2. A33014

Number of n-moves paths of a king starting and ending at the origin of an infinite chessboard. A94061

Numbers n such that the base-n number formed by concatenating the base-n numbers 1 2 ... n-1 n n-1 ... 2 1 is prime. A260343

a(n) = n³ - n² + n - 1 = (n-1) * (n² + 1). A62158

T(n,k)=Number of length n+5 0..k arrays with no six consecutive terms having the maximum of any three terms equal to the minimum of the remaining three terms. A250014

T(n,k)=Number of length n+2 0..k arrays with some pair in every consecutive three terms totalling exactly k. A245869

Numbers k such that the sum of the squares of the divisors of k is divisible by k. A46762

T(n,k)=half the number of nXk binary arrays with each element equal to at least two neighbors. A180760

Numbers k such that the largest unitary divisor of σ(k) that is coprime with A003961(k) is also a unitary divisor of k. A351551