99218 has 16 divisors (see below), whose sum is σ = 179520. Its totient is φ = 40176.

The previous prime is 99191. The next prime is 99223. The reversal of 99218 is 81299.

It is a Curzon number.

It is a plaindrome in base 5.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80 + ... + 452.

It is an arithmetic number, because the mean of its divisors is an integer number (11220).

2⁹⁹²¹⁸ is an apocalyptic number.

99218 is a deficient number, since it is larger than the sum of its proper divisors (80302).

99218 is a wasteful number, since it uses less digits than its factorization.

99218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its digits is 1296, while the sum is 29.

The square root of 99218 is about 314.9888886929. The cubic root of 99218 is about 46.2945808273.

The spelling of 99218 in words is "ninety-nine thousand, two hundred eighteen".