8199918 has 36 divisors (see below), whose sum is σ = 18277584. Its totient is φ = 2656800.

The previous prime is 8199913. The next prime is 8199931.

8199918 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8199913) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30123 + ... + 30393.

Almost surely, 2^8199918 is an apocalyptic number.

8199918 is an abundant number, since it is smaller than the sum of its proper divisors (10077666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8199918 is a wasteful number, since it uses less digits than its factorization.

8199918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 317 counting only the distinct ones).

The product of its digits is 46656, while the sum is 45.

The square root of 8199918 is about 2863.5498947984. The cubic root of 8199918 is about 201.6522953430.

It can be divided in two parts, 81 and 99918, that added together give a palindrome (99999).

The spelling of 8199918 in words is "eight million, one hundred ninety-nine thousand, nine hundred eighteen".