12390667 has 2 divisors, whose sum is σ = 12390668. Its totient is φ = 12390666.

The previous prime is 12390659. The next prime is 12390673. The reversal of 12390667 is 76609321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12390667 - 2³ = 12390659 is a prime.

It is not a weakly prime, because it can be changed into another prime (12390617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6195333 + 6195334.

It is an arithmetic number, because the mean of its divisors is an integer number (6195334).

Almost surely, 2^12390667 is an apocalyptic number.

12390667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12390667 is an equidigital number, since it uses as much as digits as its factorization.

12390667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 12390667 is about 3520.0379259320. The cubic root of 12390667 is about 231.4008208247.

Adding to 12390667 its reverse (76609321), we get a palindrome (88999988).

The spelling of 12390667 in words is "twelve million, three hundred ninety thousand, six hundred sixty-seven".