90189074 has 8 divisors (see below), whose sum is σ = 135333948. Its totient is φ = 45077760.

The previous prime is 90189059. The next prime is 90189083. The reversal of 90189074 is 47098109.

It can be written as a sum of positive squares in 2 ways, for example, as 89775625 + 413449 = 9475^2 + 643^2 .

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

It is an alternating number because its digits alternate between odd and even.

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, 14 + ... + 13430.

Almost surely, 2^90189074 is an apocalyptic number.

90189074 is a deficient number, since it is larger than the sum of its proper divisors (45144874).

90189074 is a wasteful number, since it uses less digits than its factorization.

90189074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16780.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 90189074 is about 9496.7928270548. The cubic root of 90189074 is about 448.4540763070.

The spelling of 90189074 in words is "ninety million, one hundred eighty-nine thousand, seventy-four".