90489904 has 10 divisors (see below), whose sum is σ = 175324220. Its totient is φ = 45244944.

The previous prime is 90489871. The next prime is 90489937. The reversal of 90489904 is 40998409.

It is an interprime number because it is at equal distance from previous prime (90489871) and next prime (90489937).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827794 + ... + 2827825.

It is an arithmetic number, because the mean of its divisors is an integer number (17532422).

Almost surely, 2^90489904 is an apocalyptic number.

It is an amenable number.

90489904 is a deficient number, since it is larger than the sum of its proper divisors (84834316).

90489904 is a wasteful number, since it uses less digits than its factorization.

90489904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655627 (or 5655621 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 90489904 is about 9512.6181464411. The cubic root of 90489904 is about 448.9521363390.

The spelling of 90489904 in words is "ninety million, four hundred eighty-nine thousand, nine hundred four".