99502609 has 2 divisors, whose sum is σ = 99502610. Its totient is φ = 99502608.

The previous prime is 99502603. The next prime is 99502643. The reversal of 99502609 is 90620599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98406400 + 1096209 = 9920^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 99502609 - 2²⁵ = 65948177 is a prime.

It is not a weakly prime, because it can be changed into another prime (99502603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49751304 + 49751305.

It is an arithmetic number, because the mean of its divisors is an integer number (49751305).

Almost surely, 2^99502609 is an apocalyptic number.

It is an amenable number.

99502609 is a deficient number, since it is larger than the sum of its proper divisors (1).

99502609 is an equidigital number, since it uses as much as digits as its factorization.

99502609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 99502609 is about 9975.0994481258. The cubic root of 99502609 is about 463.3880424101.

The spelling of 99502609 in words is "ninety-nine million, five hundred two thousand, six hundred nine".