249999968 has 12 divisors (see below), whose sum is σ = 492187500. Its totient is φ = 124999968.

The previous prime is 249999941. The next prime is 249999991. The reversal of 249999968 is 869999942.

249999968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3906218 + ... + 3906281.

It is an arithmetic number, because the mean of its divisors is an integer number (41015625).

Almost surely, 2^249999968 is an apocalyptic number.

It is an amenable number.

249999968 is a deficient number, since it is larger than the sum of its proper divisors (242187532).

249999968 is an equidigital number, since it uses as much as digits as its factorization.

249999968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812509 (or 7812501 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 65.

The square root of 249999968 is about 15811.3872889130. The cubic root of 249999968 is about 629.9604980691.

The spelling of 249999968 in words is "two hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred sixty-eight".