199985084 has 48 divisors (see below), whose sum is σ = 389204256. Its totient is φ = 89337600.

The previous prime is 199985083. The next prime is 199985101. The reversal of 199985084 is 480589991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199985083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212054 + ... + 212994.

It is an arithmetic number, because the mean of its divisors is an integer number (8108422).

Almost surely, 2^199985084 is an apocalyptic number.

It is an amenable number.

199985084 is a deficient number, since it is larger than the sum of its proper divisors (189219172).

199985084 is a wasteful number, since it uses less digits than its factorization.

199985084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 199985084 is about 14141.6082536605. The cubic root of 199985084 is about 584.7890090649.

The spelling of 199985084 in words is "one hundred ninety-nine million, nine hundred eighty-five thousand, eighty-four".