12209986 has 16 divisors (see below), whose sum is σ = 19103040. Its totient is φ = 5845840.

The previous prime is 12209971. The next prime is 12209993. The reversal of 12209986 is 68990221.

12209986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6795 + ... + 8401.

It is an arithmetic number, because the mean of its divisors is an integer number (1193940).

Almost surely, 2^12209986 is an apocalyptic number.

12209986 is a deficient number, since it is larger than the sum of its proper divisors (6893054).

12209986 is a wasteful number, since it uses less digits than its factorization.

12209986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 12209986 is about 3494.2790386573. The cubic root of 12209986 is about 230.2705449021.

The spelling of 12209986 in words is "twelve million, two hundred nine thousand, nine hundred eighty-six".