12977927 has 2 divisors, whose sum is σ = 12977928. Its totient is φ = 12977926.

The previous prime is 12977879. The next prime is 12977929. The reversal of 12977927 is 72977921.

It is a strong prime.

It is an emirp because it is prime and its reverse (72977921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12977927 - 2⁶ = 12977863 is a prime.

Together with 12977929, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12977929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6488963 + 6488964.

It is an arithmetic number, because the mean of its divisors is an integer number (6488964).

Almost surely, 2^12977927 is an apocalyptic number.

12977927 is a deficient number, since it is larger than the sum of its proper divisors (1).

12977927 is an equidigital number, since it uses as much as digits as its factorization.

12977927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 44.

The square root of 12977927 is about 3602.4890006772. The cubic root of 12977927 is about 235.0003138671. Note that the first 3 decimals are identical.

The spelling of 12977927 in words is "twelve million, nine hundred seventy-seven thousand, nine hundred twenty-seven".