12502309 has 2 divisors, whose sum is σ = 12502310. Its totient is φ = 12502308.

The previous prime is 12502297. The next prime is 12502339. The reversal of 12502309 is 90320521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 6084 = 3535^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 12502309 - 2⁷ = 12502181 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12502309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12502339) 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, 6251154 + 6251155.

It is an arithmetic number, because the mean of its divisors is an integer number (6251155).

Almost surely, 2^12502309 is an apocalyptic number.

It is an amenable number.

12502309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12502309 is an equidigital number, since it uses as much as digits as its factorization.

12502309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 12502309 is about 3535.8604327660. The cubic root of 12502309 is about 232.0937307057.

The spelling of 12502309 in words is "twelve million, five hundred two thousand, three hundred nine".