249137144 has 32 divisors (see below), whose sum is σ = 484704000. Its totient is φ = 119908992.

The previous prime is 249137143. The next prime is 249137149. The reversal of 249137144 is 441731942.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249137143) 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 7 ways as a sum of consecutive naturals, for example, 85097 + ... + 87975.

It is an arithmetic number, because the mean of its divisors is an integer number (15147000).

Almost surely, 2^249137144 is an apocalyptic number.

It is an amenable number.

249137144 is a deficient number, since it is larger than the sum of its proper divisors (235566856).

249137144 is a wasteful number, since it uses less digits than its factorization.

249137144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287 (or 3283 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 249137144 is about 15784.0788137921. The cubic root of 249137144 is about 629.2349359093.

The spelling of 249137144 in words is "two hundred forty-nine million, one hundred thirty-seven thousand, one hundred forty-four".