99040185 has 64 divisors (see below), whose sum is σ = 185794560. Its totient is φ = 49959360.

The previous prime is 99040169. The next prime is 99040187. The reversal of 99040185 is 58104099.

It is not a de Polignac number, because 99040185 - 2⁴ = 99040169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99040187) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 518440 + ... + 518630.

It is an arithmetic number, because the mean of its divisors is an integer number (2903040).

Almost surely, 2^99040185 is an apocalyptic number.

It is an amenable number.

99040185 is a deficient number, since it is larger than the sum of its proper divisors (86754375).

99040185 is a wasteful number, since it uses less digits than its factorization.

99040185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 99040185 is about 9951.8935384177. The cubic root of 99040185 is about 462.6690845127.

It can be divided in two parts, 99040 and 185, that added together give a square (99225 = 315²).

The spelling of 99040185 in words is "ninety-nine million, forty thousand, one hundred eighty-five".