249885938 has 16 divisors (see below), whose sum is σ = 401699520. Its totient is φ = 116279856.

The previous prime is 249885893. The next prime is 249885949. The reversal of 249885938 is 839588942.

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 7 ways as a sum of consecutive naturals, for example, 71708 + ... + 75111.

It is an arithmetic number, because the mean of its divisors is an integer number (25106220).

Almost surely, 2^249885938 is an apocalyptic number.

249885938 is a deficient number, since it is larger than the sum of its proper divisors (151813582).

249885938 is a wasteful number, since it uses less digits than its factorization.

249885938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146881.

The product of its digits is 4976640, while the sum is 56.

The square root of 249885938 is about 15807.7809321865. The cubic root of 249885938 is about 629.8647042968.

The spelling of 249885938 in words is "two hundred forty-nine million, eight hundred eighty-five thousand, nine hundred thirty-eight".