249814668 has 12 divisors (see below), whose sum is σ = 582900920. Its totient is φ = 83271552.

The previous prime is 249814667. The next prime is 249814693. The reversal of 249814668 is 866418942.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (249814667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10408933 + ... + 10408956.

Almost surely, 2^249814668 is an apocalyptic number.

It is an amenable number.

249814668 is an abundant number, since it is smaller than the sum of its proper divisors (333086252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249814668 is a wasteful number, since it uses less digits than its factorization.

249814668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20817896 (or 20817894 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 249814668 is about 15805.5265018284. The cubic root of 249814668 is about 629.8048173389.

The spelling of 249814668 in words is "two hundred forty-nine million, eight hundred fourteen thousand, six hundred sixty-eight".