12195897 has 8 divisors (see below), whose sum is σ = 18584256. Its totient is φ = 6969072.

The previous prime is 12195881. The next prime is 12195947. The reversal of 12195897 is 79859121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12195897 - 2⁴ = 12195881 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12195847) 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 7 ways as a sum of consecutive naturals, for example, 290358 + ... + 290399.

It is an arithmetic number, because the mean of its divisors is an integer number (2323032).

Almost surely, 2^12195897 is an apocalyptic number.

It is an amenable number.

12195897 is a deficient number, since it is larger than the sum of its proper divisors (6388359).

12195897 is an equidigital number, since it uses as much as digits as its factorization.

12195897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580767.

The product of its digits is 45360, while the sum is 42.

The square root of 12195897 is about 3492.2624471823. The cubic root of 12195897 is about 230.1819417331.

The spelling of 12195897 in words is "twelve million, one hundred ninety-five thousand, eight hundred ninety-seven".