8077891 has 2 divisors, whose sum is σ = 8077892. Its totient is φ = 8077890.

The previous prime is 8077871. The next prime is 8077897. The reversal of 8077891 is 1987708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8077891 - 2⁹ = 8077379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8077897) 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 as a sum of consecutive naturals, namely, 4038945 + 4038946.

It is an arithmetic number, because the mean of its divisors is an integer number (4038946).

Almost surely, 2^8077891 is an apocalyptic number.

8077891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8077891 is an equidigital number, since it uses as much as digits as its factorization.

8077891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 8077891 is about 2842.1630846945. The cubic root of 8077891 is about 200.6469963881.

The spelling of 8077891 in words is "eight million, seventy-seven thousand, eight hundred ninety-one".