12591379 has 2 divisors, whose sum is σ = 12591380. Its totient is φ = 12591378.

The previous prime is 12591343. The next prime is 12591391. The reversal of 12591379 is 97319521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12591379 - 2¹⁷ = 12460307 is a prime.

It is not a weakly prime, because it can be changed into another prime (12591479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6295689 + 6295690.

It is an arithmetic number, because the mean of its divisors is an integer number (6295690).

Almost surely, 2^12591379 is an apocalyptic number.

12591379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12591379 is an equidigital number, since it uses as much as digits as its factorization.

12591379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 12591379 is about 3548.4333162679. The cubic root of 12591379 is about 232.6435941887.

The spelling of 12591379 in words is "twelve million, five hundred ninety-one thousand, three hundred seventy-nine".