8000891 has 2 divisors, whose sum is σ = 8000892. Its totient is φ = 8000890.

The previous prime is 8000887. The next prime is 8000893. The reversal of 8000891 is 1980008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8000891 - 2² = 8000887 is a prime.

Together with 8000893, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8000891.

It is not a weakly prime, because it can be changed into another prime (8000893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000445 + 4000446.

It is an arithmetic number, because the mean of its divisors is an integer number (4000446).

Almost surely, 2^8000891 is an apocalyptic number.

8000891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8000891 is an equidigital number, since it uses as much as digits as its factorization.

8000891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 8000891 is about 2828.5846283963. The cubic root of 8000891 is about 200.0074247244.

Adding to 8000891 its reverse (1980008), we get a palindrome (9980899).

The spelling of 8000891 in words is "eight million, eight hundred ninety-one", and thus it is an aban number.