12779047 has 2 divisors, whose sum is σ = 12779048. Its totient is φ = 12779046.

The previous prime is 12779029. The next prime is 12779059. The reversal of 12779047 is 74097721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12779047 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12778997 and 12779015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12779017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6389523 + 6389524.

It is an arithmetic number, because the mean of its divisors is an integer number (6389524).

Almost surely, 2^12779047 is an apocalyptic number.

12779047 is a deficient number, since it is larger than the sum of its proper divisors (1).

12779047 is an equidigital number, since it uses as much as digits as its factorization.

12779047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 12779047 is about 3574.7792938865. The cubic root of 12779047 is about 233.7937098810.

The spelling of 12779047 in words is "twelve million, seven hundred seventy-nine thousand, forty-seven".