249992088 has 64 divisors (see below), whose sum is σ = 643507200. Its totient is φ = 80881920.

The previous prime is 249992087. The next prime is 249992111. The reversal of 249992088 is 880299942.

It is a self number, because there is not a number n which added to its sum of digits gives 249992088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249992081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234645 + ... + 235707.

It is an arithmetic number, because the mean of its divisors is an integer number (10054800).

Almost surely, 2^249992088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249992088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321753600).

249992088 is an abundant number, since it is smaller than the sum of its proper divisors (393515112).

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

249992088 is a wasteful number, since it uses less digits than its factorization.

249992088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 249992088 is about 15811.1380994538. The cubic root of 249992088 is about 629.9538792138.

The spelling of 249992088 in words is "two hundred forty-nine million, nine hundred ninety-two thousand, eighty-eight".