12389147 has 2 divisors, whose sum is σ = 12389148. Its totient is φ = 12389146.

The previous prime is 12389137. The next prime is 12389173. The reversal of 12389147 is 74198321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12389147 - 2¹⁶ = 12323611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12389137) 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, 6194573 + 6194574.

It is an arithmetic number, because the mean of its divisors is an integer number (6194574).

Almost surely, 2^12389147 is an apocalyptic number.

12389147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12389147 is an equidigital number, since it uses as much as digits as its factorization.

12389147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 12389147 is about 3519.8220125455. The cubic root of 12389147 is about 231.3913582286.

The spelling of 12389147 in words is "twelve million, three hundred eighty-nine thousand, one hundred forty-seven".