Properties of the Number 99787

Ninety-Nine Thousand Seven Hundred Eighty-Seven

Basics

Value: 99786 → 99787 → 99788

Parity: odd

Prime: Yes

Previous Prime: 99767

Next Prime: 99793

Digit Sum: 40

Digital Root: 4

Palindrome: No

Factorization: 99787

Divisors: 1, 99787

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11000010111001011

Octal: 302713

Duodecimal: 498B7

Hexadecimal: 185cb

Square: 9957445369

Square Root: 315.8908039180628

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

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

Primes with digit sum = 40. A106773

Primes which become palindromic primes when the digits are rotated once to the left. A234912

Smallest prime(k) such that the concatenation prime(k)//prime(k+1)//...//prime(k+n-1) represents an emirp. A173448

a(n) = ∑_{k=0..floor(n/4)} C(n-k,3·k) * 2^k * 3^n-4·k. A99787