249879472 has 20 divisors (see below), whose sum is σ = 484522560. Its totient is φ = 124841408.

The previous prime is 249879433. The next prime is 249879491. The reversal of 249879472 is 274978942.

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, 17598 + ... + 28450.

It is an arithmetic number, because the mean of its divisors is an integer number (24226128).

Almost surely, 2^249879472 is an apocalyptic number.

It is an amenable number.

249879472 is a deficient number, since it is larger than the sum of its proper divisors (234643088).

249879472 is a wasteful number, since it uses less digits than its factorization.

249879472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12300 (or 12294 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 249879472 is about 15807.5764113288. The cubic root of 249879472 is about 629.8592714977.

The spelling of 249879472 in words is "two hundred forty-nine million, eight hundred seventy-nine thousand, four hundred seventy-two".