Properties of the Number 79987

Seventy-Nine Thousand Nine Hundred Eighty-Seven

Basics

Value: 79986 → 79987 → 79988

Parity: odd

Prime: Yes

Previous Prime: 79979

Next Prime: 79997

Digit Sum: 40

Digital Root: 4

Palindrome: No

Factorization: 79987

Divisors: 1, 79987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011100001110011

Octal: 234163

Duodecimal: 3A357

Hexadecimal: 13873

Square: 6397920169

Square Root: 282.8197305705527

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 k such that (6^k - 1)/5 is prime. A4062

Primes having only {7, 8, 9} as digits. A106110

Primes with integer arithmetic mean of digits = 8 in base 10. A285228

Primes with digit sum = 40. A106773

Primes with minimal digit = 7. A106107

Primes that remain prime through 4 iterations of function f(x) = 9x + 10. A23327

[ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 odd positive integers}. A24205

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=3, r=3, I={-1,0,2}. A79987

Numbers k such that 8·10^k - 13 is prime. A287208