12863839 has 2 divisors, whose sum is σ = 12863840. Its totient is φ = 12863838.

The previous prime is 12863819. The next prime is 12863867. The reversal of 12863839 is 93836821.

12863839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12863839 - 2¹¹ = 12861791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12863819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6431919 + 6431920.

It is an arithmetic number, because the mean of its divisors is an integer number (6431920).

Almost surely, 2^12863839 is an apocalyptic number.

12863839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12863839 is an equidigital number, since it uses as much as digits as its factorization.

12863839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 12863839 is about 3586.6194389704. The cubic root of 12863839 is about 234.3096625933.

The spelling of 12863839 in words is "twelve million, eight hundred sixty-three thousand, eight hundred thirty-nine".