12388417 has 2 divisors, whose sum is σ = 12388418. Its totient is φ = 12388416.

The previous prime is 12388403. The next prime is 12388459. The reversal of 12388417 is 71488321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12173121 + 215296 = 3489^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 12388417 - 2¹¹ = 12386369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12388487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6194208 + 6194209.

It is an arithmetic number, because the mean of its divisors is an integer number (6194209).

Almost surely, 2^12388417 is an apocalyptic number.

It is an amenable number.

12388417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12388417 is an equidigital number, since it uses as much as digits as its factorization.

12388417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 12388417 is about 3519.7183125926. The cubic root of 12388417 is about 231.3868134172.

The spelling of 12388417 in words is "twelve million, three hundred eighty-eight thousand, four hundred seventeen".