8112891 has 4 divisors (see below), whose sum is σ = 10817192. Its totient is φ = 5408592.

The previous prime is 8112857. The next prime is 8112911. The reversal of 8112891 is 1982118.

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

It is not a de Polignac number, because 8112891 - 2¹⁷ = 7981819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8112821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352146 + ... + 1352151.

It is an arithmetic number, because the mean of its divisors is an integer number (2704298).

Almost surely, 2^8112891 is an apocalyptic number.

8112891 is a deficient number, since it is larger than the sum of its proper divisors (2704301).

8112891 is a wasteful number, since it uses less digits than its factorization.

8112891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704300.

The product of its digits is 1152, while the sum is 30.

The square root of 8112891 is about 2848.3137116547. The cubic root of 8112891 is about 200.9363675706.

The spelling of 8112891 in words is "eight million, one hundred twelve thousand, eight hundred ninety-one".