12539039 has 2 divisors, whose sum is σ = 12539040. Its totient is φ = 12539038.

The previous prime is 12539029. The next prime is 12539057. The reversal of 12539039 is 93093521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12539039 - 2²⁰ = 11490463 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12538996 and 12539014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12539029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6269519 + 6269520.

It is an arithmetic number, because the mean of its divisors is an integer number (6269520).

Almost surely, 2^12539039 is an apocalyptic number.

12539039 is a deficient number, since it is larger than the sum of its proper divisors (1).

12539039 is an equidigital number, since it uses as much as digits as its factorization.

12539039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 12539039 is about 3541.0505503311. The cubic root of 12539039 is about 232.3207945787.

The spelling of 12539039 in words is "twelve million, five hundred thirty-nine thousand, thirty-nine".