12659389 has 2 divisors, whose sum is σ = 12659390. Its totient is φ = 12659388.

The previous prime is 12659351. The next prime is 12659393. The reversal of 12659389 is 98395621.

It is a happy number.

12659389 is nontrivially palindromic in base 13.

12659389 is digitally balanced in base 2, 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., 12659364 + 25 = 3558^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 12659389 - 2⁷ = 12659261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12651389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6329694 + 6329695.

It is an arithmetic number, because the mean of its divisors is an integer number (6329695).

Almost surely, 2^12659389 is an apocalyptic number.

It is an amenable number.

12659389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12659389 is an equidigital number, since it uses as much as digits as its factorization.

12659389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 12659389 is about 3558.0035132079. The cubic root of 12659389 is about 233.0617027299.

The spelling of 12659389 in words is "twelve million, six hundred fifty-nine thousand, three hundred eighty-nine".