12744709 has 2 divisors, whose sum is σ = 12744710. Its totient is φ = 12744708.

The previous prime is 12744707. The next prime is 12744749. The reversal of 12744709 is 90744721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 459684 = 3505^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 12744709 - 2¹ = 12744707 is a prime.

Together with 12744707, 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 (12744701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6372354 + 6372355.

It is an arithmetic number, because the mean of its divisors is an integer number (6372355).

Almost surely, 2^12744709 is an apocalyptic number.

It is an amenable number.

12744709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12744709 is an equidigital number, since it uses as much as digits as its factorization.

12744709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 12744709 is about 3569.9732491995. The cubic root of 12744709 is about 233.5841165332.

The spelling of 12744709 in words is "twelve million, seven hundred forty-four thousand, seven hundred nine".