12465209 has 2 divisors, whose sum is σ = 12465210. Its totient is φ = 12465208.

The previous prime is 12465151. The next prime is 12465217. The reversal of 12465209 is 90256421.

It is a happy number.

12465209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11751184 + 714025 = 3428^2 + 845^2 .

It is an emirp because it is prime and its reverse (90256421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12465209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12465239) 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, 6232604 + 6232605.

It is an arithmetic number, because the mean of its divisors is an integer number (6232605).

Almost surely, 2^12465209 is an apocalyptic number.

It is an amenable number.

12465209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12465209 is an equidigital number, since it uses as much as digits as its factorization.

12465209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 12465209 is about 3530.6102871883. The cubic root of 12465209 is about 231.8639275886.

The spelling of 12465209 in words is "twelve million, four hundred sixty-five thousand, two hundred nine".