12919429 has 2 divisors, whose sum is σ = 12919430. Its totient is φ = 12919428.

The previous prime is 12919427. The next prime is 12919441. The reversal of 12919429 is 92491921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 31329 = 3590^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 12919429 - 2¹ = 12919427 is a prime.

Together with 12919427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12919427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459714 + 6459715.

It is an arithmetic number, because the mean of its divisors is an integer number (6459715).

Almost surely, 2^12919429 is an apocalyptic number.

It is an amenable number.

12919429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919429 is an equidigital number, since it uses as much as digits as its factorization.

12919429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 12919429 is about 3594.3607220200. The cubic root of 12919429 is about 234.6466940844.

The spelling of 12919429 in words is "twelve million, nine hundred nineteen thousand, four hundred twenty-nine".