12739039 has 4 divisors (see below), whose sum is σ = 12769720. Its totient is φ = 12708360.

The previous prime is 12739037. The next prime is 12739043. The reversal of 12739039 is 93093721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12739039 - 2¹ = 12739037 is a prime.

It is a super-2 number, since 2×12739039² = 324566229287042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12738995 and 12739013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14709 + ... + 15550.

It is an arithmetic number, because the mean of its divisors is an integer number (3192430).

Almost surely, 2^12739039 is an apocalyptic number.

12739039 is a deficient number, since it is larger than the sum of its proper divisors (30681).

12739039 is an equidigital number, since it uses as much as digits as its factorization.

12739039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30680.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 12739039 is about 3569.1790372577. The cubic root of 12739039 is about 233.5494716099.

The spelling of 12739039 in words is "twelve million, seven hundred thirty-nine thousand, thirty-nine".