90449880 has 64 divisors (see below), whose sum is σ = 285638400. Its totient is φ = 22849920.

The previous prime is 90449873. The next prime is 90449903. The reversal of 90449880 is 8894409.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17556 + ... + 22115.

It is an arithmetic number, because the mean of its divisors is an integer number (4463100).

Almost surely, 2^90449880 is an apocalyptic number.

It is an amenable number.

90449880 is an abundant number, since it is smaller than the sum of its proper divisors (195188520).

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

90449880 is a wasteful number, since it uses less digits than its factorization.

90449880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39704 (or 39700 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 90449880 is about 9510.5141816833. The cubic root of 90449880 is about 448.8859355461.

The spelling of 90449880 in words is "ninety million, four hundred forty-nine thousand, eight hundred eighty".