249949656 has 48 divisors (see below), whose sum is σ = 738489960. Its totient is φ = 75742080.

The previous prime is 249949639. The next prime is 249949663. The reversal of 249949656 is 656949942.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157005 + ... + 158588.

Almost surely, 2^249949656 is an apocalyptic number.

It is an amenable number.

249949656 is an abundant number, since it is smaller than the sum of its proper divisors (488540304).

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

249949656 is a wasteful number, since it uses less digits than its factorization.

249949656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315616 (or 315609 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 249949656 is about 15809.7962036201. The cubic root of 249949656 is about 629.9182357984.

The spelling of 249949656 in words is "two hundred forty-nine million, nine hundred forty-nine thousand, six hundred fifty-six".