90164404 has 12 divisors (see below), whose sum is σ = 172132128. Its totient is φ = 40983800.

The previous prime is 90164401. The next prime is 90164407. The reversal of 90164404 is 40446109.

It is an interprime number because it is at equal distance from previous prime (90164401) and next prime (90164407).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90164401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024552 + ... + 1024639.

It is an arithmetic number, because the mean of its divisors is an integer number (14344344).

Almost surely, 2^90164404 is an apocalyptic number.

It is an amenable number.

90164404 is a deficient number, since it is larger than the sum of its proper divisors (81967724).

90164404 is a wasteful number, since it uses less digits than its factorization.

90164404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049206 (or 2049204 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 90164404 is about 9495.4938786774. The cubic root of 90164404 is about 448.4131830647.

The spelling of 90164404 in words is "ninety million, one hundred sixty-four thousand, four hundred four".