12972149 has 2 divisors, whose sum is σ = 12972150. Its totient is φ = 12972148.

The previous prime is 12972131. The next prime is 12972217. The reversal of 12972149 is 94127921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12909649 + 62500 = 3593^2 + 250^2 .

It is an emirp because it is prime and its reverse (94127921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12972149 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 (12932149) 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, 6486074 + 6486075.

It is an arithmetic number, because the mean of its divisors is an integer number (6486075).

Almost surely, 2^12972149 is an apocalyptic number.

It is an amenable number.

12972149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12972149 is an equidigital number, since it uses as much as digits as its factorization.

12972149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 12972149 is about 3601.6869658536. The cubic root of 12972149 is about 234.9654332740.

The spelling of 12972149 in words is "twelve million, nine hundred seventy-two thousand, one hundred forty-nine".