12439211 has 2 divisors, whose sum is σ = 12439212. Its totient is φ = 12439210.

The previous prime is 12439199. The next prime is 12439237. The reversal of 12439211 is 11293421.

It is a weak prime.

It is an emirp because it is prime and its reverse (11293421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12439211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12430211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6219605 + 6219606.

It is an arithmetic number, because the mean of its divisors is an integer number (6219606).

Almost surely, 2^12439211 is an apocalyptic number.

12439211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12439211 is an equidigital number, since it uses as much as digits as its factorization.

12439211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 12439211 is about 3526.9265657226. The cubic root of 12439211 is about 231.7026201179.

The spelling of 12439211 in words is "twelve million, four hundred thirty-nine thousand, two hundred eleven".