12739539 has 8 divisors (see below), whose sum is σ = 17724672. Its totient is φ = 8123720.

The previous prime is 12739537. The next prime is 12739577. The reversal of 12739539 is 93593721.

12739539 is nontrivially palindromic in base 14.

12739539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12739539 - 2¹ = 12739537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12739497 and 12739506.

It is not an unprimeable number, because it can be changed into a prime (12739537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92247 + ... + 92384.

It is an arithmetic number, because the mean of its divisors is an integer number (2215584).

Almost surely, 2^12739539 is an apocalyptic number.

12739539 is a deficient number, since it is larger than the sum of its proper divisors (4985133).

12739539 is a wasteful number, since it uses less digits than its factorization.

12739539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184657.

The product of its digits is 51030, while the sum is 39.

The square root of 12739539 is about 3569.2490806891. The cubic root of 12739539 is about 233.5525271310.

The spelling of 12739539 in words is "twelve million, seven hundred thirty-nine thousand, five hundred thirty-nine".