249871223 has 32 divisors (see below), whose sum is σ = 311869440. Its totient is φ = 195441120.

The previous prime is 249871217. The next prime is 249871231. The reversal of 249871223 is 322178942.

It is not a de Polignac number, because 249871223 - 2¹⁶ = 249805687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249871243) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 443540 + ... + 444102.

It is an arithmetic number, because the mean of its divisors is an integer number (9745920).

Almost surely, 2^249871223 is an apocalyptic number.

249871223 is a deficient number, since it is larger than the sum of its proper divisors (61998217).

249871223 is a wasteful number, since it uses less digits than its factorization.

249871223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its digits is 48384, while the sum is 38.

The square root of 249871223 is about 15807.3154899875. The cubic root of 249871223 is about 629.8523404677.

The spelling of 249871223 in words is "two hundred forty-nine million, eight hundred seventy-one thousand, two hundred twenty-three".