99233509 has 2 divisors, whose sum is σ = 99233510. Its totient is φ = 99233508.

The previous prime is 99233503. The next prime is 99233513. The reversal of 99233509 is 90533299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 13300609 = 9270^2 + 3647^2 .

It is a cyclic number.

It is not a de Polignac number, because 99233509 - 2³ = 99233501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99233501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49616754 + 49616755.

It is an arithmetic number, because the mean of its divisors is an integer number (49616755).

Almost surely, 2^99233509 is an apocalyptic number.

It is an amenable number.

99233509 is a deficient number, since it is larger than the sum of its proper divisors (1).

99233509 is an equidigital number, since it uses as much as digits as its factorization.

99233509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 40.

The square root of 99233509 is about 9961.6017286378. The cubic root of 99233509 is about 462.9699284006.

The spelling of 99233509 in words is "ninety-nine million, two hundred thirty-three thousand, five hundred nine".