8217493 has 8 divisors (see below), whose sum is σ = 8436960. Its totient is φ = 8000880.

The previous prime is 8217479. The next prime is 8217523. The reversal of 8217493 is 3947128.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8217493 is a prime.

It is a Duffinian number.

8217493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8217193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5898 + ... + 7156.

It is an arithmetic number, because the mean of its divisors is an integer number (1054620).

Almost surely, 2^8217493 is an apocalyptic number.

It is an amenable number.

8217493 is a deficient number, since it is larger than the sum of its proper divisors (219467).

8217493 is a wasteful number, since it uses less digits than its factorization.

8217493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its digits is 12096, while the sum is 34.

The square root of 8217493 is about 2866.6169956937. The cubic root of 8217493 is about 201.7962606081.

The spelling of 8217493 in words is "eight million, two hundred seventeen thousand, four hundred ninety-three".