90109174 has 8 divisors (see below), whose sum is σ = 135222768. Its totient is φ = 45034920.

The previous prime is 90109141. The next prime is 90109183. The reversal of 90109174 is 47190109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3217 + ... + 13804.

It is an arithmetic number, because the mean of its divisors is an integer number (16902846).

Almost surely, 2^90109174 is an apocalyptic number.

90109174 is a deficient number, since it is larger than the sum of its proper divisors (45113594).

90109174 is a wasteful number, since it uses less digits than its factorization.

90109174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19670.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 90109174 is about 9492.5852116270. The cubic root of 90109174 is about 448.3216062063.

The spelling of 90109174 in words is "ninety million, one hundred nine thousand, one hundred seventy-four".