12684929 has 2 divisors, whose sum is σ = 12684930. Its totient is φ = 12684928.

The previous prime is 12684923. The next prime is 12684943. The reversal of 12684929 is 92948621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 1827904 = 3295^2 + 1352^2 .

It is an emirp because it is prime and its reverse (92948621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12684929 - 2²⁰ = 11636353 is a prime.

It is not a weakly prime, because it can be changed into another prime (12684923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6342464 + 6342465.

It is an arithmetic number, because the mean of its divisors is an integer number (6342465).

Almost surely, 2^12684929 is an apocalyptic number.

It is an amenable number.

12684929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12684929 is an equidigital number, since it uses as much as digits as its factorization.

12684929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 12684929 is about 3561.5907962594. The cubic root of 12684929 is about 233.2183294948.

The spelling of 12684929 in words is "twelve million, six hundred eighty-four thousand, nine hundred twenty-nine".