12894839 has 2 divisors, whose sum is σ = 12894840. Its totient is φ = 12894838.

The previous prime is 12894829. The next prime is 12894841. The reversal of 12894839 is 93849821.

It is a happy number.

12894839 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12894839 - 2¹⁶ = 12829303 is a prime.

It is a Sophie Germain prime.

Together with 12894841, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12894839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12894829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6447419 + 6447420.

It is an arithmetic number, because the mean of its divisors is an integer number (6447420).

Almost surely, 2^12894839 is an apocalyptic number.

12894839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12894839 is an equidigital number, since it uses as much as digits as its factorization.

12894839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 12894839 is about 3590.9384567269. The cubic root of 12894839 is about 234.4977291209.

The spelling of 12894839 in words is "twelve million, eight hundred ninety-four thousand, eight hundred thirty-nine".