8221847 has 2 divisors, whose sum is σ = 8221848. Its totient is φ = 8221846.

The previous prime is 8221841. The next prime is 8221859. The reversal of 8221847 is 7481228.

8221847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8221847 - 2⁴ = 8221831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8221841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110923 + 4110924.

It is an arithmetic number, because the mean of its divisors is an integer number (4110924).

Almost surely, 2^8221847 is an apocalyptic number.

8221847 is a deficient number, since it is larger than the sum of its proper divisors (1).

8221847 is an equidigital number, since it uses as much as digits as its factorization.

8221847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

The square root of 8221847 is about 2867.3763268884. The cubic root of 8221847 is about 201.8318945817.

The spelling of 8221847 in words is "eight million, two hundred twenty-one thousand, eight hundred forty-seven".