12977243 has 2 divisors, whose sum is σ = 12977244. Its totient is φ = 12977242.

The previous prime is 12977233. The next prime is 12977287. The reversal of 12977243 is 34277921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12977243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12977233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6488621 + 6488622.

It is an arithmetic number, because the mean of its divisors is an integer number (6488622).

Almost surely, 2^12977243 is an apocalyptic number.

12977243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12977243 is an equidigital number, since it uses as much as digits as its factorization.

12977243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 12977243 is about 3602.3940650628. The cubic root of 12977243 is about 234.9961852406.

The spelling of 12977243 in words is "twelve million, nine hundred seventy-seven thousand, two hundred forty-three".