99188166 has 128 divisors (see below), whose sum is σ = 266996736. Its totient is φ = 23777280.

The previous prime is 99188119. The next prime is 99188179. The reversal of 99188166 is 66188199.

99188166 is a strobogrammatic number because it is the same when read upside-down.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 573256 + ... + 573428.

It is an arithmetic number, because the mean of its divisors is an integer number (2085912).

Almost surely, 2^99188166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99188166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133498368).

99188166 is an abundant number, since it is smaller than the sum of its proper divisors (167808570).

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

99188166 is a wasteful number, since it uses less digits than its factorization.

99188166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its digits is 186624, while the sum is 48.

The square root of 99188166 is about 9959.3255795762. The cubic root of 99188166 is about 462.8994023459.

The spelling of 99188166 in words is "ninety-nine million, one hundred eighty-eight thousand, one hundred sixty-six".