249431079 has 8 divisors (see below), whose sum is σ = 333431280. Its totient is φ = 165859136.

The previous prime is 249431047. The next prime is 249431087. The reversal of 249431079 is 970134942.

249431079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249431079 - 2⁵ = 249431047 is a prime.

It is a super-2 number, since 2×249431079² = 124431726342208482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249431009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105702 + ... + 108035.

It is an arithmetic number, because the mean of its divisors is an integer number (41678910).

Almost surely, 2^249431079 is an apocalyptic number.

249431079 is a deficient number, since it is larger than the sum of its proper divisors (84000201).

249431079 is a wasteful number, since it uses less digits than its factorization.

249431079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214129.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 249431079 is about 15793.3871921130. The cubic root of 249431079 is about 629.4822983038.

The spelling of 249431079 in words is "two hundred forty-nine million, four hundred thirty-one thousand, seventy-nine".