12838979 has 2 divisors, whose sum is σ = 12838980. Its totient is φ = 12838978.

The previous prime is 12838951. The next prime is 12838993. The reversal of 12838979 is 97983821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12838979 - 2²⁰ = 11790403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12838079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419489 + 6419490.

It is an arithmetic number, because the mean of its divisors is an integer number (6419490).

Almost surely, 2^12838979 is an apocalyptic number.

12838979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12838979 is an equidigital number, since it uses as much as digits as its factorization.

12838979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 12838979 is about 3583.1521039442. The cubic root of 12838979 is about 234.1586269506.

The spelling of 12838979 in words is "twelve million, eight hundred thirty-eight thousand, nine hundred seventy-nine".