90393285 has 16 divisors (see below), whose sum is σ = 145688256. Its totient is φ = 47856768.

The previous prime is 90393271. The next prime is 90393311. The reversal of 90393285 is 58239309.

It is not a de Polignac number, because 90393285 - 2⁴ = 90393269 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 19939 + ... + 24048.

It is an arithmetic number, because the mean of its divisors is an integer number (9105516).

Almost surely, 2^90393285 is an apocalyptic number.

It is an amenable number.

90393285 is a deficient number, since it is larger than the sum of its proper divisors (55294971).

90393285 is a wasteful number, since it uses less digits than its factorization.

90393285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44132.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 90393285 is about 9507.5383249293. The cubic root of 90393285 is about 448.7922925253.

The spelling of 90393285 in words is "ninety million, three hundred ninety-three thousand, two hundred eighty-five".