199999880 has 32 divisors (see below), whose sum is σ = 460468800. Its totient is φ = 78138816.

The previous prime is 199999853. The next prime is 199999889. The reversal of 199999880 is 88999991.

199999880 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (199999889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56420 + ... + 59859.

It is an arithmetic number, because the mean of its divisors is an integer number (14389650).

Almost surely, 2^199999880 is an apocalyptic number.

199999880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199999880 is an abundant number, since it is smaller than the sum of its proper divisors (260468920).

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

199999880 is a wasteful number, since it uses less digits than its factorization.

199999880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116333 (or 116329 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 62.

The square root of 199999880 is about 14142.1313810896. The cubic root of 199999880 is about 584.8034306818.

The spelling of 199999880 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred eighty".