249413879 has 16 divisors (see below), whose sum is σ = 302475264. Its totient is φ = 202543200.

The previous prime is 249413849. The next prime is 249413881. The reversal of 249413879 is 978314942.

It is a cyclic number.

It is not a de Polignac number, because 249413879 - 2²⁰ = 248365303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249413809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23699 + ... + 32564.

It is an arithmetic number, because the mean of its divisors is an integer number (18904704).

Almost surely, 2^249413879 is an apocalyptic number.

249413879 is a deficient number, since it is larger than the sum of its proper divisors (53061385).

249413879 is a wasteful number, since it uses less digits than its factorization.

249413879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56318.

The product of its digits is 435456, while the sum is 47.

The square root of 249413879 is about 15792.8426510239. The cubic root of 249413879 is about 629.4678289168.

The spelling of 249413879 in words is "two hundred forty-nine million, four hundred thirteen thousand, eight hundred seventy-nine".