8217994 has 8 divisors (see below), whose sum is σ = 12975840. Its totient is φ = 3892716.

The previous prime is 8217983. The next prime is 8218009. The reversal of 8217994 is 4997128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 108094 + ... + 108169.

It is an arithmetic number, because the mean of its divisors is an integer number (1621980).

Almost surely, 2^8217994 is an apocalyptic number.

8217994 is a deficient number, since it is larger than the sum of its proper divisors (4757846).

8217994 is a wasteful number, since it uses less digits than its factorization.

8217994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216284.

The product of its digits is 36288, while the sum is 40.

The square root of 8217994 is about 2866.7043795969. The cubic root of 8217994 is about 201.8003615292.

The spelling of 8217994 in words is "eight million, two hundred seventeen thousand, nine hundred ninety-four".