12904693 has 2 divisors, whose sum is σ = 12904694. Its totient is φ = 12904692.

The previous prime is 12904691. The next prime is 12904763. The reversal of 12904693 is 39640921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12229009 + 675684 = 3497^2 + 822^2 .

It is an emirp because it is prime and its reverse (39640921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12904693 - 2¹ = 12904691 is a prime.

It is a super-2 number, since 2×12904693² = 333062202848498, which contains 22 as substring.

Together with 12904691, 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 (12904691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452346 + 6452347.

It is an arithmetic number, because the mean of its divisors is an integer number (6452347).

Almost surely, 2^12904693 is an apocalyptic number.

It is an amenable number.

12904693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12904693 is an equidigital number, since it uses as much as digits as its factorization.

12904693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 12904693 is about 3592.3102594292. The cubic root of 12904693 is about 234.5574468696.

The spelling of 12904693 in words is "twelve million, nine hundred four thousand, six hundred ninety-three".