249387892 has 36 divisors (see below), whose sum is σ = 500404716. Its totient is φ = 108326400.

The previous prime is 249387889. The next prime is 249387913. The reversal of 249387892 is 298783942.

It can be written as a sum of positive squares in 6 ways, for example, as 190096 + 249197796 = 436^2 + 15786^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642 + ... + 22342.

It is an arithmetic number, because the mean of its divisors is an integer number (13900131).

Almost surely, 2^249387892 is an apocalyptic number.

It is an amenable number.

249387892 is an abundant number, since it is smaller than the sum of its proper divisors (251016824).

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

249387892 is a wasteful number, since it uses less digits than its factorization.

249387892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21748 (or 21733 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 249387892 is about 15792.0198834728. The cubic root of 249387892 is about 629.4459662620.

The spelling of 249387892 in words is "two hundred forty-nine million, three hundred eighty-seven thousand, eight hundred ninety-two".