99804172 has 12 divisors (see below), whose sum is σ = 188092576. Its totient is φ = 46063440.

The previous prime is 99804157. The next prime is 99804179. The reversal of 99804172 is 27140899.

It is a super-3 number, since 3×99804172³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (99804179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959604 + ... + 959707.

Almost surely, 2^99804172 is an apocalyptic number.

It is an amenable number.

99804172 is a deficient number, since it is larger than the sum of its proper divisors (88288404).

99804172 is a wasteful number, since it uses less digits than its factorization.

99804172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919328 (or 1919326 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 99804172 is about 9990.2038017250. The cubic root of 99804172 is about 463.8557010171.

The spelling of 99804172 in words is "ninety-nine million, eight hundred four thousand, one hundred seventy-two".