249724844 has 12 divisors (see below), whose sum is σ = 438720744. Its totient is φ = 124376064.

The previous prime is 249724841. The next prime is 249724861. The reversal of 249724844 is 448427942.

It is a junction number, because it is equal to n+sod(n) for n = 249724795 and 249724804.

It is not an unprimeable number, because it can be changed into a prime (249724841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120434 + ... + 122489.

It is an arithmetic number, because the mean of its divisors is an integer number (36560062).

Almost surely, 2^249724844 is an apocalyptic number.

It is an amenable number.

249724844 is a deficient number, since it is larger than the sum of its proper divisors (188995900).

249724844 is a wasteful number, since it uses less digits than its factorization.

249724844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243184 (or 243182 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 249724844 is about 15802.6847086183. The cubic root of 249724844 is about 629.7293235471.

The spelling of 249724844 in words is "two hundred forty-nine million, seven hundred twenty-four thousand, eight hundred forty-four".