90373309 has 32 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 74210304.

The previous prime is 90373301. The next prime is 90373331. The reversal of 90373309 is 90337309.

It is not a de Polignac number, because 90373309 - 2³ = 90373301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90373301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378012 + ... + 378250.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^90373309 is an apocalyptic number.

It is an amenable number.

90373309 is a deficient number, since it is larger than the sum of its proper divisors (18490691).

90373309 is a wasteful number, since it uses less digits than its factorization.

90373309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 15309, while the sum is 34.

The square root of 90373309 is about 9506.4877320701. The cubic root of 90373309 is about 448.7592305734.

The spelling of 90373309 in words is "ninety million, three hundred seventy-three thousand, three hundred nine".