12173986 has 8 divisors (see below), whose sum is σ = 19921104. Its totient is φ = 5533620.

The previous prime is 12173983. The next prime is 12174011. The reversal of 12173986 is 68937121.

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 (12173983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276660 + ... + 276703.

It is an arithmetic number, because the mean of its divisors is an integer number (2490138).

Almost surely, 2^12173986 is an apocalyptic number.

12173986 is a deficient number, since it is larger than the sum of its proper divisors (7747118).

12173986 is a wasteful number, since it uses less digits than its factorization.

12173986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553376.

The product of its digits is 18144, while the sum is 37.

The square root of 12173986 is about 3489.1239588183. The cubic root of 12173986 is about 230.0440117414.

The spelling of 12173986 in words is "twelve million, one hundred seventy-three thousand, nine hundred eighty-six".