8216387 has 2 divisors, whose sum is σ = 8216388. Its totient is φ = 8216386.

The previous prime is 8216371. The next prime is 8216407. The reversal of 8216387 is 7836128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8216387 - 2⁴ = 8216371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8216317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108193 + 4108194.

It is an arithmetic number, because the mean of its divisors is an integer number (4108194).

Almost surely, 2^8216387 is an apocalyptic number.

8216387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8216387 is an equidigital number, since it uses as much as digits as its factorization.

8216387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 8216387 is about 2866.4240788830. The cubic root of 8216387 is about 201.7872068866.

The spelling of 8216387 in words is "eight million, two hundred sixteen thousand, three hundred eighty-seven".