249289239 has 8 divisors (see below), whose sum is σ = 341369200. Its totient is φ = 161701056.

The previous prime is 249289231. The next prime is 249289273. The reversal of 249289239 is 932982942.

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

It is not a de Polignac number, because 249289239 - 2³ = 249289231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249289231) 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, 1122814 + ... + 1123035.

It is an arithmetic number, because the mean of its divisors is an integer number (42671150).

Almost surely, 2^249289239 is an apocalyptic number.

249289239 is a deficient number, since it is larger than the sum of its proper divisors (92079961).

249289239 is a wasteful number, since it uses less digits than its factorization.

249289239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245889.

The product of its digits is 559872, while the sum is 48.

The square root of 249289239 is about 15788.8960665399. The cubic root of 249289239 is about 629.3629564544.

The spelling of 249289239 in words is "two hundred forty-nine million, two hundred eighty-nine thousand, two hundred thirty-nine".