12389579 has 2 divisors, whose sum is σ = 12389580. Its totient is φ = 12389578.

The previous prime is 12389567. The next prime is 12389581. The reversal of 12389579 is 97598321.

It is a strong prime.

It is an emirp because it is prime and its reverse (97598321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12389579 - 2⁸ = 12389323 is a prime.

Together with 12389581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12389879) 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, 6194789 + 6194790.

It is an arithmetic number, because the mean of its divisors is an integer number (6194790).

Almost surely, 2^12389579 is an apocalyptic number.

12389579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12389579 is an equidigital number, since it uses as much as digits as its factorization.

12389579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 12389579 is about 3519.8833787499. The cubic root of 12389579 is about 231.3940476767.

The spelling of 12389579 in words is "twelve million, three hundred eighty-nine thousand, five hundred seventy-nine".