249679972 has 12 divisors (see below), whose sum is σ = 437673600. Its totient is φ = 124630376.

The previous prime is 249679961. The next prime is 249679981. The reversal of 249679972 is 279976942.

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, 49708 + ... + 54499.

It is an arithmetic number, because the mean of its divisors is an integer number (36472800).

Almost surely, 2^249679972 is an apocalyptic number.

It is an amenable number.

249679972 is a deficient number, since it is larger than the sum of its proper divisors (187993628).

249679972 is a wasteful number, since it uses less digits than its factorization.

249679972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104810 (or 104808 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The square root of 249679972 is about 15801.2648860779. The cubic root of 249679972 is about 629.6916034891.

The spelling of 249679972 in words is "two hundred forty-nine million, six hundred seventy-nine thousand, nine hundred seventy-two".