12969709 has 2 divisors, whose sum is σ = 12969710. Its totient is φ = 12969708.

The previous prime is 12969679. The next prime is 12969731. The reversal of 12969709 is 90796921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8684809 + 4284900 = 2947^2 + 2070^2 .

It is an emirp because it is prime and its reverse (90796921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12969709 - 2⁹ = 12969197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12969739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6484854 + 6484855.

It is an arithmetic number, because the mean of its divisors is an integer number (6484855).

Almost surely, 2^12969709 is an apocalyptic number.

It is an amenable number.

12969709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12969709 is an equidigital number, since it uses as much as digits as its factorization.

12969709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 12969709 is about 3601.3482197644. The cubic root of 12969709 is about 234.9507003872.

The spelling of 12969709 in words is "twelve million, nine hundred sixty-nine thousand, seven hundred nine".