12538679 has 2 divisors, whose sum is σ = 12538680. Its totient is φ = 12538678.

The previous prime is 12538649. The next prime is 12538723. The reversal of 12538679 is 97683521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12538679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12538609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6269339 + 6269340.

It is an arithmetic number, because the mean of its divisors is an integer number (6269340).

Almost surely, 2^12538679 is an apocalyptic number.

12538679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12538679 is an equidigital number, since it uses as much as digits as its factorization.

12538679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 12538679 is about 3540.9997175939. Note that the first 3 decimals coincide. The cubic root of 12538679 is about 232.3185712215.

The spelling of 12538679 in words is "twelve million, five hundred thirty-eight thousand, six hundred seventy-nine".