249407874 has 24 divisors (see below), whose sum is σ = 541365552. Its totient is φ = 82984920.

The previous prime is 249407843. The next prime is 249407881. The reversal of 249407874 is 478704942.

It is a super-2 number, since 2×249407874² = 124408575226399752, which contains 22 as substring.

It is a nialpdrome in base 16.

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, 2172 + ... + 22439.

It is an arithmetic number, because the mean of its divisors is an integer number (22556898).

Almost surely, 2^249407874 is an apocalyptic number.

249407874 is an abundant number, since it is smaller than the sum of its proper divisors (291957678).

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

249407874 is a wasteful number, since it uses less digits than its factorization.

249407874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25182 (or 25179 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 249407874 is about 15792.6525321113. The cubic root of 249407874 is about 629.4627770934.

The spelling of 249407874 in words is "two hundred forty-nine million, four hundred seven thousand, eight hundred seventy-four".