12289393 has 2 divisors, whose sum is σ = 12289394. Its totient is φ = 12289392.

The previous prime is 12289373. The next prime is 12289399. The reversal of 12289393 is 39398221.

12289393 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11888704 + 400689 = 3448^2 + 633^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12289393 is a prime.

It is not a weakly prime, because it can be changed into another prime (12289399) 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, 6144696 + 6144697.

It is an arithmetic number, because the mean of its divisors is an integer number (6144697).

Almost surely, 2^12289393 is an apocalyptic number.

It is an amenable number.

12289393 is a deficient number, since it is larger than the sum of its proper divisors (1).

12289393 is an equidigital number, since it uses as much as digits as its factorization.

12289393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 12289393 is about 3505.6230544655. The cubic root of 12289393 is about 230.7686507706.

The spelling of 12289393 in words is "twelve million, two hundred eighty-nine thousand, three hundred ninety-three".