99421168 has 160 divisors (see below), whose sum is σ = 262268928. Its totient is φ = 35328000.

The previous prime is 99421159. The next prime is 99421177. The reversal of 99421168 is 86112499.

It is an interprime number because it is at equal distance from previous prime (99421159) and next prime (99421177).

It is a self number, because there is not a number n which added to its sum of digits gives 99421168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 984318 + ... + 984418.

Almost surely, 2^99421168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99421168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131134464).

99421168 is an abundant number, since it is smaller than the sum of its proper divisors (162847760).

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

99421168 is a wasteful number, since it uses less digits than its factorization.

99421168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 185 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 99421168 is about 9971.0163975394. The cubic root of 99421168 is about 463.2615831250.

The spelling of 99421168 in words is "ninety-nine million, four hundred twenty-one thousand, one hundred sixty-eight".