249988904 has 24 divisors (see below), whose sum is σ = 515216730. Its totient is φ = 113630880.

The previous prime is 249988897. The next prime is 249988933. The reversal of 249988904 is 409889942.

249988904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 198866404 + 51122500 = 14102^2 + 7150^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128159 + ... + 130094.

Almost surely, 2^249988904 is an apocalyptic number.

It is an amenable number.

249988904 is an abundant number, since it is smaller than the sum of its proper divisors (265227826).

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

249988904 is a wasteful number, since it uses less digits than its factorization.

249988904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258281 (or 258266 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 249988904 is about 15811.0374106192. The cubic root of 249988904 is about 629.9512047536.

The spelling of 249988904 in words is "two hundred forty-nine million, nine hundred eighty-eight thousand, nine hundred four".