90318309 has 16 divisors (see below), whose sum is σ = 125884800. Its totient is φ = 57491456.

The previous prime is 90318271. The next prime is 90318313. The reversal of 90318309 is 90381309.

It is a cyclic number.

It is not a de Polignac number, because 90318309 - 2⁷ = 90318181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90318309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90318329) 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 in 15 ways as a sum of consecutive naturals, for example, 63397 + ... + 64805.

It is an arithmetic number, because the mean of its divisors is an integer number (7867800).

Almost surely, 2^90318309 is an apocalyptic number.

It is an amenable number.

90318309 is a deficient number, since it is larger than the sum of its proper divisors (35566491).

90318309 is a wasteful number, since it uses less digits than its factorization.

90318309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 90318309 is about 9503.5945304921. The cubic root of 90318309 is about 448.6681757895.

The spelling of 90318309 in words is "ninety million, three hundred eighteen thousand, three hundred nine".