8196891 has 4 divisors (see below), whose sum is σ = 10929192. Its totient is φ = 5464592.

The previous prime is 8196887. The next prime is 8196899. The reversal of 8196891 is 1986918.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8196891 - 2² = 8196887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8196899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366146 + ... + 1366151.

It is an arithmetic number, because the mean of its divisors is an integer number (2732298).

Almost surely, 2^8196891 is an apocalyptic number.

8196891 is a deficient number, since it is larger than the sum of its proper divisors (2732301).

8196891 is a wasteful number, since it uses less digits than its factorization.

8196891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732300.

The product of its digits is 31104, while the sum is 42.

The square root of 8196891 is about 2863.0213062428. The cubic root of 8196891 is about 201.6274789719.

The spelling of 8196891 in words is "eight million, one hundred ninety-six thousand, eight hundred ninety-one".