12709389 has 32 divisors (see below), whose sum is σ = 21712896. Its totient is φ = 6419520.

The previous prime is 12709379. The next prime is 12709393. The reversal of 12709389 is 98390721.

12709389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12709389 - 2⁵ = 12709357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12709379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7804 + ... + 9290.

It is an arithmetic number, because the mean of its divisors is an integer number (678528).

Almost surely, 2^12709389 is an apocalyptic number.

It is an amenable number.

12709389 is a deficient number, since it is larger than the sum of its proper divisors (9003507).

12709389 is a wasteful number, since it uses less digits than its factorization.

12709389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12709389 is about 3565.0230013283. The cubic root of 12709389 is about 233.3681360786.

The spelling of 12709389 in words is "twelve million, seven hundred nine thousand, three hundred eighty-nine".