8218819 has 12 divisors (see below), whose sum is σ = 9796248. Its totient is φ = 6871200.

The previous prime is 8218817. The next prime is 8218831. The reversal of 8218819 is 9188128.

It is not a de Polignac number, because 8218819 - 2¹ = 8218817 is a prime.

It is a super-2 number, since 2×8218819² = 135097971509522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8218817) 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 11 ways as a sum of consecutive naturals, for example, 37 + ... + 4054.

It is an arithmetic number, because the mean of its divisors is an integer number (816354).

Almost surely, 2^8218819 is an apocalyptic number.

8218819 is a deficient number, since it is larger than the sum of its proper divisors (1577429).

8218819 is a wasteful number, since it uses less digits than its factorization.

8218819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146 (or 4139 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 8218819 is about 2866.8482694415. The cubic root of 8218819 is about 201.8071141798.

The spelling of 8218819 in words is "eight million, two hundred eighteen thousand, eight hundred nineteen".