249542391444 has 24 divisors (see below), whose sum is σ = 612911137440. Its totient is φ = 78802860384.

The previous prime is 249542391407. The next prime is 249542391467. The reversal of 249542391444 is 444193245942.

249542391444 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547241859 + ... + 547242314.

It is an arithmetic number, because the mean of its divisors is an integer number (25537964060).

Almost surely, 2^249542391444 is an apocalyptic number.

It is an amenable number.

249542391444 is an abundant number, since it is smaller than the sum of its proper divisors (363368745996).

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

249542391444 is a wasteful number, since it uses less digits than its factorization.

249542391444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094484199 (or 1094484197 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 51.

The spelling of 249542391444 in words is "two hundred forty-nine billion, five hundred forty-two million, three hundred ninety-one thousand, four hundred forty-four".