12912719 has 2 divisors, whose sum is σ = 12912720. Its totient is φ = 12912718.

The previous prime is 12912703. The next prime is 12912769. The reversal of 12912719 is 91721921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12912719 - 2⁴ = 12912703 is a prime.

It is a super-2 number, since 2×12912719² = 333476623945922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12912769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456359 + 6456360.

It is an arithmetic number, because the mean of its divisors is an integer number (6456360).

Almost surely, 2^12912719 is an apocalyptic number.

12912719 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912719 is an equidigital number, since it uses as much as digits as its factorization.

12912719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 32.

The square root of 12912719 is about 3593.4271941978. The cubic root of 12912719 is about 234.6060640127.

It can be divided in two parts, 12912 and 719, that added together give a palindrome (13631).

The spelling of 12912719 in words is "twelve million, nine hundred twelve thousand, seven hundred nineteen".