Properties of the Number 40823

Forty Thousand Eight Hundred Twenty-Three

Basics

Value: 40822 → 40823 → 40824

Parity: odd

Prime: Yes

Previous Prime: 40819

Next Prime: 40829

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 40823

Divisors: 1, 40823

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001111101110111

Octal: 117567

Duodecimal: 1B75B

Hexadecimal: 9f77

Square: 1666517329

Square Root: 202.0470242295095

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

Sixth term of strong prime sextets: p(m-4)-p(m-5) > p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1). A54818

Denominators of lower primes-only best approximates (POBAs) to sqrt(5); see Comments. A265785

Primes of the form 8·k-1 such that 4·k-1 and 16·k-1 are also primes. A101792

Primes of the form 14 n²-1. A143832

a(n) = 56·n² - 1. A158658

Number of ways to partition digits 0-9 into signed terms in decreasing absolute value order with sum n. A389952

Primes of the form n + sum of proper non-divisors of n. A192560

Primes of the form 7n³-1. A200915

Fibonacci sequence beginning 11, 9. A206422

a(n) = |{0 < k <= n/2: φ(k²)*φ(n-k) - 1 is a Sophie Germain prime}|, where φ(.) is Euler's totient function. A234308