249299912 has 16 divisors (see below), whose sum is σ = 492039600. Its totient is φ = 118089360.

The previous prime is 249299909. The next prime is 249299933. The reversal of 249299912 is 219992942.

It is a super-2 number, since 2×249299912² = 124300892246415488, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 819914 + ... + 820217.

It is an arithmetic number, because the mean of its divisors is an integer number (30752475).

Almost surely, 2^249299912 is an apocalyptic number.

It is an amenable number.

249299912 is a deficient number, since it is larger than the sum of its proper divisors (242739688).

249299912 is a wasteful number, since it uses less digits than its factorization.

249299912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640156 (or 1640152 counting only the distinct ones).

The product of its digits is 209952, while the sum is 47.

The square root of 249299912 is about 15789.2340536202. The cubic root of 249299912 is about 629.3719381163.

The spelling of 249299912 in words is "two hundred forty-nine million, two hundred ninety-nine thousand, nine hundred twelve".