12388669 has 2 divisors, whose sum is σ = 12388670. Its totient is φ = 12388668.

The previous prime is 12388661. The next prime is 12388693. The reversal of 12388669 is 96688321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 403225 = 3462^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 12388669 - 2³ = 12388661 is a prime.

It is a super-2 number, since 2×12388669² = 306958239183122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12388661) 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, 6194334 + 6194335.

It is an arithmetic number, because the mean of its divisors is an integer number (6194335).

Almost surely, 2^12388669 is an apocalyptic number.

It is an amenable number.

12388669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12388669 is an equidigital number, since it uses as much as digits as its factorization.

12388669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 12388669 is about 3519.7541107299. The cubic root of 12388669 is about 231.3883823311.

The spelling of 12388669 in words is "twelve million, three hundred eighty-eight thousand, six hundred sixty-nine".