90909118 has 8 divisors (see below), whose sum is σ = 136867680. Its totient is φ = 45286560.

The previous prime is 90909109. The next prime is 90909121. The reversal of 90909118 is 81190909.

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, 83323 + ... + 84406.

It is an arithmetic number, because the mean of its divisors is an integer number (17108460).

Almost surely, 2^90909118 is an apocalyptic number.

90909118 is a deficient number, since it is larger than the sum of its proper divisors (45958562).

90909118 is a wasteful number, since it uses less digits than its factorization.

90909118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168002.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 90909118 is about 9534.6273131151. The cubic root of 90909118 is about 449.6443576873.

The spelling of 90909118 in words is "ninety million, nine hundred nine thousand, one hundred eighteen".