99238218 has 16 divisors (see below), whose sum is σ = 203841120. Its totient is φ = 32185296.

The previous prime is 99238213. The next prime is 99238219. The reversal of 99238218 is 81283299.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99238218.

It is not an unprimeable number, because it can be changed into a prime (99238211) 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, 223288 + ... + 223731.

It is an arithmetic number, because the mean of its divisors is an integer number (12740070).

Almost surely, 2^99238218 is an apocalyptic number.

99238218 is an abundant number, since it is smaller than the sum of its proper divisors (104602902).

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

99238218 is a wasteful number, since it uses less digits than its factorization.

99238218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447061.

The product of its digits is 62208, while the sum is 42.

The square root of 99238218 is about 9961.8380834061. The cubic root of 99238218 is about 462.9772515012.

The spelling of 99238218 in words is "ninety-nine million, two hundred thirty-eight thousand, two hundred eighteen".