249555992 has 16 divisors (see below), whose sum is σ = 534762960. Its totient is φ = 106952544.

The previous prime is 249555989. The next prime is 249556007. The reversal of 249555992 is 299555942.

It is a self number, because there is not a number n which added to its sum of digits gives 249555992.

It is a congruent number.

It is an unprimeable number.

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, 2228123 + ... + 2228234.

It is an arithmetic number, because the mean of its divisors is an integer number (33422685).

Almost surely, 2^249555992 is an apocalyptic number.

It is an amenable number.

249555992 is an abundant number, since it is smaller than the sum of its proper divisors (285206968).

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

249555992 is a wasteful number, since it uses less digits than its factorization.

249555992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456370 (or 4456366 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 50.

The square root of 249555992 is about 15797.3412952940. The cubic root of 249555992 is about 629.5873605925.

Subtracting from 249555992 its sum of digits (50), we obtain a palindrome (249555942).

The spelling of 249555992 in words is "two hundred forty-nine million, five hundred fifty-five thousand, nine hundred ninety-two".