249349239 has 24 divisors (see below), whose sum is σ = 374752080. Its totient is φ = 163861056.

The previous prime is 249349207. The next prime is 249349291. The reversal of 249349239 is 932943942.

It is a happy number.

It is not a de Polignac number, because 249349239 - 2⁵ = 249349207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249349194 and 249349203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249349339) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 143017 + ... + 144749.

It is an arithmetic number, because the mean of its divisors is an integer number (15614670).

Almost surely, 2^249349239 is an apocalyptic number.

249349239 is a deficient number, since it is larger than the sum of its proper divisors (125402841).

249349239 is an equidigital number, since it uses as much as digits as its factorization.

249349239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888 (or 1809 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 249349239 is about 15790.7960217337. The cubic root of 249349239 is about 629.4134449932.

The spelling of 249349239 in words is "two hundred forty-nine million, three hundred forty-nine thousand, two hundred thirty-nine".