8393218 has 8 divisors (see below), whose sum is σ = 12705660. Its totient is φ = 4158000.

The previous prime is 8393179. The next prime is 8393243. The reversal of 8393218 is 8123938.

It can be written as a sum of positive squares in 2 ways, for example, as 7912969 + 480249 = 2813^2 + 693^2 .

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

It is a super-2 number, since 2×8393218² = 140892216791048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19033 + ... + 19468.

Almost surely, 2^8393218 is an apocalyptic number.

8393218 is a deficient number, since it is larger than the sum of its proper divisors (4312442).

8393218 is a wasteful number, since it uses less digits than its factorization.

8393218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38612.

The product of its digits is 10368, while the sum is 34.

The square root of 8393218 is about 2897.1051068265. The cubic root of 8393218 is about 203.2245486957.

The spelling of 8393218 in words is "eight million, three hundred ninety-three thousand, two hundred eighteen".