12391627 has 2 divisors, whose sum is σ = 12391628. Its totient is φ = 12391626.

The previous prime is 12391609. The next prime is 12391637. The reversal of 12391627 is 72619321.

12391627 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (72619321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12391627 - 2⁷ = 12391499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12391607) 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, 6195813 + 6195814.

It is an arithmetic number, because the mean of its divisors is an integer number (6195814).

Almost surely, 2^12391627 is an apocalyptic number.

12391627 is a deficient number, since it is larger than the sum of its proper divisors (1).

12391627 is an equidigital number, since it uses as much as digits as its factorization.

12391627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 12391627 is about 3520.1742854580. The cubic root of 12391627 is about 231.4067968024.

The spelling of 12391627 in words is "twelve million, three hundred ninety-one thousand, six hundred twenty-seven".