90499998 has 32 divisors (see below), whose sum is σ = 184306176. Its totient is φ = 29619648.

The previous prime is 90499987. The next prime is 90500063. The reversal of 90499998 is 89999409.

It is a congruent number.

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, 160465 + ... + 161027.

It is an arithmetic number, because the mean of its divisors is an integer number (5759568).

Almost surely, 2^90499998 is an apocalyptic number.

90499998 is an abundant number, since it is smaller than the sum of its proper divisors (93806178).

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

90499998 is a wasteful number, since it uses less digits than its factorization.

90499998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 90499998 is about 9513.1486901026. The cubic root of 90499998 is about 448.9688290092.

The spelling of 90499998 in words is "ninety million, four hundred ninety-nine thousand, nine hundred ninety-eight".