12367409 has 2 divisors, whose sum is σ = 12367410. Its totient is φ = 12367408.

The previous prime is 12367339. The next prime is 12367417. The reversal of 12367409 is 90476321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11751184 + 616225 = 3428^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 12367409 - 2¹² = 12363313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12367489) 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, 6183704 + 6183705.

It is an arithmetic number, because the mean of its divisors is an integer number (6183705).

Almost surely, 2^12367409 is an apocalyptic number.

It is an amenable number.

12367409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12367409 is an equidigital number, since it uses as much as digits as its factorization.

12367409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 12367409 is about 3516.7327165993. The cubic root of 12367409 is about 231.2559458905.

The spelling of 12367409 in words is "twelve million, three hundred sixty-seven thousand, four hundred nine".