8208091 has 2 divisors, whose sum is σ = 8208092. Its totient is φ = 8208090.

The previous prime is 8208071. The next prime is 8208107. The reversal of 8208091 is 1908028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8208091 - 2⁹ = 8207579 is a prime.

It is not a weakly prime, because it can be changed into another prime (8208001) 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 as a sum of consecutive naturals, namely, 4104045 + 4104046.

It is an arithmetic number, because the mean of its divisors is an integer number (4104046).

Almost surely, 2^8208091 is an apocalyptic number.

8208091 is a deficient number, since it is larger than the sum of its proper divisors (1).

8208091 is an equidigital number, since it uses as much as digits as its factorization.

8208091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 8208091 is about 2864.9766142152. The cubic root of 8208091 is about 201.7192698724.

It can be divided in two parts, 820 and 8091, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 8208091 in words is "eight million, two hundred eight thousand, ninety-one".