90091140 has 48 divisors (see below), whose sum is σ = 255104640. Its totient is φ = 23752960.

The previous prime is 90091123. The next prime is 90091163. The reversal of 90091140 is 4119009.

It is a self number, because there is not a number n which added to its sum of digits gives 90091140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3096 + ... + 13775.

It is an arithmetic number, because the mean of its divisors is an integer number (5314680).

Almost surely, 2^90091140 is an apocalyptic number.

It is an amenable number.

90091140 is an abundant number, since it is smaller than the sum of its proper divisors (165013500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90091140 is a wasteful number, since it uses less digits than its factorization.

90091140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16972 (or 16970 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 90091140 is about 9491.6352648003. The cubic root of 90091140 is about 448.2916959285.

The spelling of 90091140 in words is "ninety million, ninety-one thousand, one hundred forty".