12769609 has 2 divisors, whose sum is σ = 12769610. Its totient is φ = 12769608.

The previous prime is 12769607. The next prime is 12769619. The reversal of 12769609 is 90696721.

12769609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11923209 + 846400 = 3453^2 + 920^2 .

It is an emirp because it is prime and its reverse (90696721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12769609 - 2¹ = 12769607 is a prime.

Together with 12769607, 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 (12769607) 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, 6384804 + 6384805.

It is an arithmetic number, because the mean of its divisors is an integer number (6384805).

Almost surely, 2^12769609 is an apocalyptic number.

It is an amenable number.

12769609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12769609 is an equidigital number, since it uses as much as digits as its factorization.

12769609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 12769609 is about 3573.4589685625. The cubic root of 12769609 is about 233.7361393785.

The spelling of 12769609 in words is "twelve million, seven hundred sixty-nine thousand, six hundred nine".