249648904 has 64 divisors (see below), whose sum is σ = 506160000. Its totient is φ = 115084800.

The previous prime is 249648899. The next prime is 249648911. The reversal of 249648904 is 409846942.

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, 1653229 + ... + 1653379.

It is an arithmetic number, because the mean of its divisors is an integer number (7908750).

Almost surely, 2^249648904 is an apocalyptic number.

It is an amenable number.

249648904 is an abundant number, since it is smaller than the sum of its proper divisors (256511096).

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

249648904 is a wasteful number, since it uses less digits than its factorization.

249648904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 249648904 is about 15800.2817696394. The cubic root of 249648904 is about 629.6654846270.

The spelling of 249648904 in words is "two hundred forty-nine million, six hundred forty-eight thousand, nine hundred four".