8216447 has 2 divisors, whose sum is σ = 8216448. Its totient is φ = 8216446.

The previous prime is 8216437. The next prime is 8216459. The reversal of 8216447 is 7446128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8216447 - 2²⁰ = 7167871 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 (8216407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108223 + 4108224.

It is an arithmetic number, because the mean of its divisors is an integer number (4108224).

Almost surely, 2^8216447 is an apocalyptic number.

8216447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8216447 is an equidigital number, since it uses as much as digits as its factorization.

8216447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 32.

The square root of 8216447 is about 2866.4345448658. The cubic root of 8216447 is about 201.7876980678.

The spelling of 8216447 in words is "eight million, two hundred sixteen thousand, four hundred forty-seven".