8216917 has 4 divisors (see below), whose sum is σ = 8316000. Its totient is φ = 8117836.

The previous prime is 8216893. The next prime is 8216921. The reversal of 8216917 is 7196128.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8216917 - 2¹⁵ = 8184149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49417 + ... + 49582.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^8216917 is an apocalyptic number.

It is an amenable number.

8216917 is a deficient number, since it is larger than the sum of its proper divisors (99083).

8216917 is an equidigital number, since it uses as much as digits as its factorization.

8216917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99082.

The product of its digits is 6048, while the sum is 34.

The square root of 8216917 is about 2866.5165270760. The cubic root of 8216917 is about 201.7915455706.

The spelling of 8216917 in words is "eight million, two hundred sixteen thousand, nine hundred seventeen".