249424144 has 20 divisors (see below), whose sum is σ = 504271296. Its totient is φ = 119289632.

The previous prime is 249424139. The next prime is 249424243. The reversal of 249424144 is 441424942.

It is a super-2 number, since 2×249424144² = 124424807220265472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338524 + ... + 339259.

Almost surely, 2^249424144 is an apocalyptic number.

It is an amenable number.

249424144 is an abundant number, since it is smaller than the sum of its proper divisors (254847152).

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

249424144 is a wasteful number, since it uses less digits than its factorization.

249424144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677814 (or 677808 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 249424144 is about 15793.1676366712. The cubic root of 249424144 is about 629.4764643606.

The spelling of 249424144 in words is "two hundred forty-nine million, four hundred twenty-four thousand, one hundred forty-four".