12977147 has 2 divisors, whose sum is σ = 12977148. Its totient is φ = 12977146.

The previous prime is 12977143. The next prime is 12977177. The reversal of 12977147 is 74177921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12977147 - 2² = 12977143 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12977147.

It is not a weakly prime, because it can be changed into another prime (12977141) 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, 6488573 + 6488574.

It is an arithmetic number, because the mean of its divisors is an integer number (6488574).

Almost surely, 2^12977147 is an apocalyptic number.

12977147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12977147 is an equidigital number, since it uses as much as digits as its factorization.

12977147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 38.

The square root of 12977147 is about 3602.3807405659. The cubic root of 12977147 is about 234.9956057727.

The spelling of 12977147 in words is "twelve million, nine hundred seventy-seven thousand, one hundred forty-seven".