90409258 has 8 divisors (see below), whose sum is σ = 142751520. Its totient is φ = 42825420.

The previous prime is 90409229. The next prime is 90409261. The reversal of 90409258 is 85290409.

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

It is a super-2 number, since 2×90409258² = 16347667864221128, which contains 22 as substring.

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, 1189558 + ... + 1189633.

It is an arithmetic number, because the mean of its divisors is an integer number (17843940).

Almost surely, 2^90409258 is an apocalyptic number.

90409258 is a deficient number, since it is larger than the sum of its proper divisors (52342262).

90409258 is a wasteful number, since it uses less digits than its factorization.

90409258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379212.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 90409258 is about 9508.3783054735. The cubic root of 90409258 is about 448.8187256727.

The spelling of 90409258 in words is "ninety million, four hundred nine thousand, two hundred fifty-eight".