12009986 has 16 divisors (see below), whose sum is σ = 18532800. Its totient is φ = 5833968.

The previous prime is 12009971. The next prime is 12009997. The reversal of 12009986 is 68990021.

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, 30680 + ... + 31068.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^12009986 is an apocalyptic number.

12009986 is a deficient number, since it is larger than the sum of its proper divisors (6522814).

12009986 is a wasteful number, since it uses less digits than its factorization.

12009986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 12009986 is about 3465.5426703476. The cubic root of 12009986 is about 229.0063371053.

The spelling of 12009986 in words is "twelve million, nine thousand, nine hundred eighty-six".