12659139 has 16 divisors (see below), whose sum is σ = 18817440. Its totient is φ = 8411040.

The previous prime is 12659137. The next prime is 12659159. The reversal of 12659139 is 93195621.

It is not a de Polignac number, because 12659139 - 2¹ = 12659137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12659137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10129 + ... + 11309.

It is an arithmetic number, because the mean of its divisors is an integer number (1176090).

Almost surely, 2^12659139 is an apocalyptic number.

12659139 is a deficient number, since it is larger than the sum of its proper divisors (6158301).

12659139 is a wasteful number, since it uses less digits than its factorization.

12659139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1581 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 12659139 is about 3557.9683809725. The cubic root of 12659139 is about 233.0601685377.

It can be divided in two parts, 1265 and 9139, that added together give a square (10404 = 102²).

The spelling of 12659139 in words is "twelve million, six hundred fifty-nine thousand, one hundred thirty-nine".