12839986 has 8 divisors (see below), whose sum is σ = 19398960. Its totient is φ = 6373668.

The previous prime is 12839971. The next prime is 12839989. The reversal of 12839986 is 68993821.

12839986 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 not an unprimeable number, because it can be changed into a prime (12839989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22816 + ... + 23371.

It is an arithmetic number, because the mean of its divisors is an integer number (2424870).

Almost surely, 2^12839986 is an apocalyptic number.

12839986 is a deficient number, since it is larger than the sum of its proper divisors (6558974).

12839986 is a wasteful number, since it uses less digits than its factorization.

12839986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46328.

The product of its digits is 186624, while the sum is 46.

The square root of 12839986 is about 3583.2926199237. The cubic root of 12839986 is about 234.1647487140.

The spelling of 12839986 in words is "twelve million, eight hundred thirty-nine thousand, nine hundred eighty-six".