90449488 has 20 divisors (see below), whose sum is σ = 175815508. Its totient is φ = 45077760.

The previous prime is 90449483. The next prime is 90449507. The reversal of 90449488 is 88494409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28858384 + 61591104 = 5372^2 + 7848^2 .

It is a super-2 number, since 2×90449488² = 16362219758924288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90449483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4023 + ... + 14038.

Almost surely, 2^90449488 is an apocalyptic number.

It is an amenable number.

90449488 is a deficient number, since it is larger than the sum of its proper divisors (85366020).

90449488 is a wasteful number, since it uses less digits than its factorization.

90449488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382 (or 18376 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 90449488 is about 9510.4935728909. The cubic root of 90449488 is about 448.8852870708.

The spelling of 90449488 in words is "ninety million, four hundred forty-nine thousand, four hundred eighty-eight".