12469309 has 2 divisors, whose sum is σ = 12469310. Its totient is φ = 12469308.

The previous prime is 12469307. The next prime is 12469357. The reversal of 12469309 is 90396421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10381284 + 2088025 = 3222^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 12469309 - 2¹ = 12469307 is a prime.

Together with 12469307, 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 (12469307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6234654 + 6234655.

It is an arithmetic number, because the mean of its divisors is an integer number (6234655).

Almost surely, 2^12469309 is an apocalyptic number.

It is an amenable number.

12469309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12469309 is an equidigital number, since it uses as much as digits as its factorization.

12469309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 12469309 is about 3531.1908756112. The cubic root of 12469309 is about 231.8893460124.

The spelling of 12469309 in words is "twelve million, four hundred sixty-nine thousand, three hundred nine".