12804709 has 2 divisors, whose sum is σ = 12804710. Its totient is φ = 12804708.

The previous prime is 12804707. The next prime is 12804719. The reversal of 12804709 is 90740821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9474084 + 3330625 = 3078^2 + 1825^2 .

It is an emirp because it is prime and its reverse (90740821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12804709 - 2¹ = 12804707 is a prime.

Together with 12804707, it forms a pair of twin primes.

It is equal to p₈₃₇₃₈₂ and since 12804709 and 837382 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12804703) 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, 6402354 + 6402355.

It is an arithmetic number, because the mean of its divisors is an integer number (6402355).

Almost surely, 2^12804709 is an apocalyptic number.

It is an amenable number.

12804709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12804709 is an equidigital number, since it uses as much as digits as its factorization.

12804709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12804709 is about 3578.3668062400. The cubic root of 12804709 is about 233.9501013724.

The spelling of 12804709 in words is "twelve million, eight hundred four thousand, seven hundred nine".