12392986 has 4 divisors (see below), whose sum is σ = 18589482. Its totient is φ = 6196492.

The previous prime is 12392981. The next prime is 12393001. The reversal of 12392986 is 68929321.

It is a happy number.

12392986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 275625 = 3481^2 + 525^2 .

It is a super-2 number, since 2×12392986² = 307172203992392, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12392981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3098245 + ... + 3098248.

Almost surely, 2^12392986 is an apocalyptic number.

12392986 is a deficient number, since it is larger than the sum of its proper divisors (6196496).

12392986 is an equidigital number, since it uses as much as digits as its factorization.

12392986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6196495.

The product of its digits is 46656, while the sum is 40.

The square root of 12392986 is about 3520.3673103811. The cubic root of 12392986 is about 231.4152560182.

It can be divided in two parts, 1239 and 2986, that added together give a square (4225 = 65²).

The spelling of 12392986 in words is "twelve million, three hundred ninety-two thousand, nine hundred eighty-six".