90920475 has 60 divisors (see below), whose sum is σ = 171495720. Its totient is φ = 47606400.

The previous prime is 90920381. The next prime is 90920521. The reversal of 90920475 is 57402909.

It is not a de Polignac number, because 90920475 - 2¹¹ = 90918427 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 119095 + ... + 119855.

It is an arithmetic number, because the mean of its divisors is an integer number (2858262).

Almost surely, 2^90920475 is an apocalyptic number.

90920475 is a deficient number, since it is larger than the sum of its proper divisors (80575245).

90920475 is a wasteful number, since it uses less digits than its factorization.

90920475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 90920475 is about 9535.2228605314. Note that the first 3 decimals coincide. The cubic root of 90920475 is about 449.6630811423.

The spelling of 90920475 in words is "ninety million, nine hundred twenty thousand, four hundred seventy-five".