12843689 has 2 divisors, whose sum is σ = 12843690. Its totient is φ = 12843688.

The previous prime is 12843647. The next prime is 12843731. The reversal of 12843689 is 98634821.

12843689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12843647) and next prime (12843731).

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 1283689 = 3400^2 + 1133^2 .

It is an emirp because it is prime and its reverse (98634821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12843689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12840689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6421844 + 6421845.

It is an arithmetic number, because the mean of its divisors is an integer number (6421845).

Almost surely, 2^12843689 is an apocalyptic number.

It is an amenable number.

12843689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12843689 is an equidigital number, since it uses as much as digits as its factorization.

12843689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 12843689 is about 3583.8092862205. The cubic root of 12843689 is about 234.1872572723.

The spelling of 12843689 in words is "twelve million, eight hundred forty-three thousand, six hundred eighty-nine".