90499120 has 20 divisors (see below), whose sum is σ = 210410640. Its totient is φ = 36199616.

The previous prime is 90499099. The next prime is 90499121. The reversal of 90499120 is 2199409.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (90499121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565540 + ... + 565699.

It is an arithmetic number, because the mean of its divisors is an integer number (10520532).

Almost surely, 2^90499120 is an apocalyptic number.

It is an amenable number.

90499120 is an abundant number, since it is smaller than the sum of its proper divisors (119911520).

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

90499120 is a wasteful number, since it uses less digits than its factorization.

90499120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131252 (or 1131246 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 90499120 is about 9513.1025433346. The cubic root of 90499120 is about 448.9673770905.

The spelling of 90499120 in words is "ninety million, four hundred ninety-nine thousand, one hundred twenty".