12195986 has 32 divisors (see below), whose sum is σ = 21254400. Its totient is φ = 5190480.

The previous prime is 12195973. The next prime is 12195991. The reversal of 12195986 is 68959121.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68045 + ... + 68223.

It is an arithmetic number, because the mean of its divisors is an integer number (664200).

Almost surely, 2^12195986 is an apocalyptic number.

12195986 is a deficient number, since it is larger than the sum of its proper divisors (9058414).

12195986 is a wasteful number, since it uses less digits than its factorization.

12195986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374.

The product of its digits is 38880, while the sum is 41.

The square root of 12195986 is about 3492.2751896149. The cubic root of 12195986 is about 230.1825016521.

The spelling of 12195986 in words is "twelve million, one hundred ninety-five thousand, nine hundred eighty-six".