8218443 has 8 divisors (see below), whose sum is σ = 10971856. Its totient is φ = 5472000.

The previous prime is 8218439. The next prime is 8218447. The reversal of 8218443 is 3448128.

It is an interprime number because it is at equal distance from previous prime (8218439) and next prime (8218447).

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

It is not a de Polignac number, because 8218443 - 2² = 8218439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8218443.

It is not an unprimeable number, because it can be changed into a prime (8218447) 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, 2463 + ... + 4743.

It is an arithmetic number, because the mean of its divisors is an integer number (1371482).

Almost surely, 2^8218443 is an apocalyptic number.

8218443 is a deficient number, since it is larger than the sum of its proper divisors (2753413).

8218443 is a wasteful number, since it uses less digits than its factorization.

8218443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485.

The product of its digits is 6144, while the sum is 30.

The square root of 8218443 is about 2866.7826914505. The cubic root of 8218443 is about 201.8040366642.

The spelling of 8218443 in words is "eight million, two hundred eighteen thousand, four hundred forty-three".