12439249 has 4 divisors (see below), whose sum is σ = 12528880. Its totient is φ = 12349620.

The previous prime is 12439237. The next prime is 12439253. The reversal of 12439249 is 94293421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12439249 - 2⁹ = 12438737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12439279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44607 + ... + 44884.

It is an arithmetic number, because the mean of its divisors is an integer number (3132220).

Almost surely, 2^12439249 is an apocalyptic number.

It is an amenable number.

12439249 is a deficient number, since it is larger than the sum of its proper divisors (89631).

12439249 is an equidigital number, since it uses as much as digits as its factorization.

12439249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89630.

The product of its digits is 15552, while the sum is 34.

The square root of 12439249 is about 3526.9319528451. The cubic root of 12439249 is about 231.7028560571.

The spelling of 12439249 in words is "twelve million, four hundred thirty-nine thousand, two hundred forty-nine".