12839447 has 2 divisors, whose sum is σ = 12839448. Its totient is φ = 12839446.

The previous prime is 12839443. The next prime is 12839467. The reversal of 12839447 is 74493821.

It is a weak prime.

It is an emirp because it is prime and its reverse (74493821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12839447 - 2² = 12839443 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12839447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12839443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419723 + 6419724.

It is an arithmetic number, because the mean of its divisors is an integer number (6419724).

Almost surely, 2^12839447 is an apocalyptic number.

12839447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12839447 is an equidigital number, since it uses as much as digits as its factorization.

12839447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 12839447 is about 3583.2174089776. The cubic root of 12839447 is about 234.1614720602.

The spelling of 12839447 in words is "twelve million, eight hundred thirty-nine thousand, four hundred forty-seven".