12189179 has 2 divisors, whose sum is σ = 12189180. Its totient is φ = 12189178.

The previous prime is 12189161. The next prime is 12189181. The reversal of 12189179 is 97198121.

It is a strong prime.

It is an emirp because it is prime and its reverse (97198121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12189179 is a prime.

It is a Sophie Germain prime.

Together with 12189181, 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 (12189139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6094589 + 6094590.

It is an arithmetic number, because the mean of its divisors is an integer number (6094590).

Almost surely, 2^12189179 is an apocalyptic number.

12189179 is a deficient number, since it is larger than the sum of its proper divisors (1).

12189179 is an equidigital number, since it uses as much as digits as its factorization.

12189179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The square root of 12189179 is about 3491.3004740354. The cubic root of 12189179 is about 230.1396694207.

The spelling of 12189179 in words is "twelve million, one hundred eighty-nine thousand, one hundred seventy-nine".