12824389 has 2 divisors, whose sum is σ = 12824390. Its totient is φ = 12824388.

The previous prime is 12824387. The next prime is 12824447. The reversal of 12824389 is 98342821.

12824389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 887364 = 3455^2 + 942^2 .

It is an emirp because it is prime and its reverse (98342821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12824389 - 2¹ = 12824387 is a prime.

Together with 12824387, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₃₈₅₈₅ and since 12824389 and 838585 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12824387) 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, 6412194 + 6412195.

It is an arithmetic number, because the mean of its divisors is an integer number (6412195).

Almost surely, 2^12824389 is an apocalyptic number.

It is an amenable number.

12824389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12824389 is an equidigital number, since it uses as much as digits as its factorization.

12824389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 12824389 is about 3581.1156082986. The cubic root of 12824389 is about 234.0698953548.

It can be divided in two parts, 1282 and 4389, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 12824389 in words is "twelve million, eight hundred twenty-four thousand, three hundred eighty-nine".