12178949 has 2 divisors, whose sum is σ = 12178950. Its totient is φ = 12178948.

The previous prime is 12178921. The next prime is 12178993. The reversal of 12178949 is 94987121.

12178949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 5712100 = 2543^2 + 2390^2 .

It is an emirp because it is prime and its reverse (94987121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12178949 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 (12178909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6089474 + 6089475.

It is an arithmetic number, because the mean of its divisors is an integer number (6089475).

Almost surely, 2^12178949 is an apocalyptic number.

It is an amenable number.

12178949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12178949 is an equidigital number, since it uses as much as digits as its factorization.

12178949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 12178949 is about 3489.8350963907. The cubic root of 12178949 is about 230.0752683711.

The spelling of 12178949 in words is "twelve million, one hundred seventy-eight thousand, nine hundred forty-nine".