12947719 has 2 divisors, whose sum is σ = 12947720. Its totient is φ = 12947718.

The previous prime is 12947681. The next prime is 12947729. The reversal of 12947719 is 91774921.

12947719 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12947719 is a prime.

It is a super-2 number, since 2×12947719² = 335286854605922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12947729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473859 + 6473860.

It is an arithmetic number, because the mean of its divisors is an integer number (6473860).

Almost surely, 2^12947719 is an apocalyptic number.

12947719 is a deficient number, since it is larger than the sum of its proper divisors (1).

12947719 is an equidigital number, since it uses as much as digits as its factorization.

12947719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 12947719 is about 3598.2939012816. The cubic root of 12947719 is about 234.8178398219.

The spelling of 12947719 in words is "twelve million, nine hundred forty-seven thousand, seven hundred nineteen".