12839443 has 2 divisors, whose sum is σ = 12839444. Its totient is φ = 12839442.

The previous prime is 12839429. The next prime is 12839447. The reversal of 12839443 is 34493821.

12839443 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 is an emirp because it is prime and its reverse (34493821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12839443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12839399 and 12839408.

It is not a weakly prime, because it can be changed into another prime (12839447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419721 + 6419722.

It is an arithmetic number, because the mean of its divisors is an integer number (6419722).

Almost surely, 2^12839443 is an apocalyptic number.

12839443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12839443 is an equidigital number, since it uses as much as digits as its factorization.

12839443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 12839443 is about 3583.2168508199. The cubic root of 12839443 is about 234.1614477433.

It can be divided in two parts, 12 and 839443, that multiplied together give a triangular number (10073316 = T₄₄₈₈).

The spelling of 12839443 in words is "twelve million, eight hundred thirty-nine thousand, four hundred forty-three".