90499000 has 32 divisors (see below), whose sum is σ = 211770000. Its totient is φ = 36199200.

The previous prime is 90498959. The next prime is 90499001. The reversal of 90499000 is 99409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90499001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44250 + ... + 46249.

Almost surely, 2^90499000 is an apocalyptic number.

It is an amenable number.

90499000 is an abundant number, since it is smaller than the sum of its proper divisors (121271000).

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

90499000 is a wasteful number, since it uses less digits than its factorization.

90499000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90520 (or 90506 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 90499000 is about 9513.0962362419. The cubic root of 90499000 is about 448.9671786499.

The spelling of 90499000 in words is "ninety million, four hundred ninety-nine thousand".