12704849 has 2 divisors, whose sum is σ = 12704850. Its totient is φ = 12704848.

The previous prime is 12704843. The next prime is 12704851. The reversal of 12704849 is 94840721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 3125824 = 3095^2 + 1768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12704849 is a prime.

It is a super-2 number, since 2×12704849² = 322826376225602, which contains 22 as substring.

Together with 12704851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12704843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352424 + 6352425.

It is an arithmetic number, because the mean of its divisors is an integer number (6352425).

Almost surely, 2^12704849 is an apocalyptic number.

It is an amenable number.

12704849 is a deficient number, since it is larger than the sum of its proper divisors (1).

12704849 is an equidigital number, since it uses as much as digits as its factorization.

12704849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12704849 is about 3564.3862024197. The cubic root of 12704849 is about 233.3403451408.

The spelling of 12704849 in words is "twelve million, seven hundred four thousand, eight hundred forty-nine".