12009988 has 12 divisors (see below), whose sum is σ = 21042000. Its totient is φ = 5997992.

The previous prime is 12009971. The next prime is 12009997. The reversal of 12009988 is 88990021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4995 + ... + 6997.

It is an arithmetic number, because the mean of its divisors is an integer number (1753500).

Almost surely, 2^12009988 is an apocalyptic number.

It is an amenable number.

12009988 is a deficient number, since it is larger than the sum of its proper divisors (9032012).

12009988 is a wasteful number, since it uses less digits than its factorization.

12009988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506 (or 3504 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 12009988 is about 3465.5429589027. The cubic root of 12009988 is about 229.0063498173.

The spelling of 12009988 in words is "twelve million, nine thousand, nine hundred eighty-eight".