12348209 has 2 divisors, whose sum is σ = 12348210. Its totient is φ = 12348208.

The previous prime is 12348173. The next prime is 12348211. The reversal of 12348209 is 90284321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7441984 + 4906225 = 2728^2 + 2215^2 .

It is a cyclic number.

It is not a de Polignac number, because 12348209 - 2⁸ = 12347953 is a prime.

Together with 12348211, 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 (12348289) 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, 6174104 + 6174105.

It is an arithmetic number, because the mean of its divisors is an integer number (6174105).

Almost surely, 2^12348209 is an apocalyptic number.

It is an amenable number.

12348209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12348209 is an equidigital number, since it uses as much as digits as its factorization.

12348209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12348209 is about 3514.0018497434. The cubic root of 12348209 is about 231.1362114644.

The spelling of 12348209 in words is "twelve million, three hundred forty-eight thousand, two hundred nine".