8422247 has 2 divisors, whose sum is σ = 8422248. Its totient is φ = 8422246.

The previous prime is 8422243. The next prime is 8422279. The reversal of 8422247 is 7422248.

8422247 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 8422247 - 2² = 8422243 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8 + 4 + 2⁹ + 2¹⁵ + 2²³ + 4 + 7³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8422241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211123 + 4211124.

It is an arithmetic number, because the mean of its divisors is an integer number (4211124).

Almost surely, 2^8422247 is an apocalyptic number.

8422247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8422247 is an equidigital number, since it uses as much as digits as its factorization.

8422247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 29.

The square root of 8422247 is about 2902.1107835505. The cubic root of 8422247 is about 203.4585716567.

Subtracting from 8422247 its reverse (7422248), we obtain a palindrome (999999).

The spelling of 8422247 in words is "eight million, four hundred twenty-two thousand, two hundred forty-seven".