12395189 has 2 divisors, whose sum is σ = 12395190. Its totient is φ = 12395188.

The previous prime is 12395177. The next prime is 12395219. The reversal of 12395189 is 98159321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 3496900 = 2983^2 + 1870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12395189 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 (12395389) 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, 6197594 + 6197595.

It is an arithmetic number, because the mean of its divisors is an integer number (6197595).

Almost surely, 2^12395189 is an apocalyptic number.

It is an amenable number.

12395189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12395189 is an equidigital number, since it uses as much as digits as its factorization.

12395189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 38.

The square root of 12395189 is about 3520.6801899633. The cubic root of 12395189 is about 231.4289674731.

The spelling of 12395189 in words is "twelve million, three hundred ninety-five thousand, one hundred eighty-nine".