8199818 has 8 divisors (see below), whose sum is σ = 13417920. Its totient is φ = 3727180.

The previous prime is 8199809. The next prime is 8199827. The reversal of 8199818 is 8189918.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8199809) and next prime (8199827).

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, 186338 + ... + 186381.

It is an arithmetic number, because the mean of its divisors is an integer number (1677240).

Almost surely, 2^8199818 is an apocalyptic number.

8199818 is a deficient number, since it is larger than the sum of its proper divisors (5218102).

8199818 is a wasteful number, since it uses less digits than its factorization.

8199818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372732.

The product of its digits is 41472, while the sum is 44.

The square root of 8199818 is about 2863.5324339005. The cubic root of 8199818 is about 201.6514756067.

It can be divided in two parts, 81 and 99818, that added together give a palindrome (99899).

The spelling of 8199818 in words is "eight million, one hundred ninety-nine thousand, eight hundred eighteen".