12439727 has 2 divisors, whose sum is σ = 12439728. Its totient is φ = 12439726.

The previous prime is 12439723. The next prime is 12439751. The reversal of 12439727 is 72793421.

It is a weak prime.

It is an emirp because it is prime and its reverse (72793421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12439727 - 2² = 12439723 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12439723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6219863 + 6219864.

It is an arithmetic number, because the mean of its divisors is an integer number (6219864).

Almost surely, 2^12439727 is an apocalyptic number.

12439727 is a deficient number, since it is larger than the sum of its proper divisors (1).

12439727 is an equidigital number, since it uses as much as digits as its factorization.

12439727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 12439727 is about 3526.9997164729. Note that the first 3 decimals coincide. The cubic root of 12439727 is about 231.7058238822.

The spelling of 12439727 in words is "twelve million, four hundred thirty-nine thousand, seven hundred twenty-seven".