199996788 has 24 divisors (see below), whose sum is σ = 467444992. Its totient is φ = 66553344.

The previous prime is 199996759. The next prime is 199996813. The reversal of 199996788 is 887699991.

199996788 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

199996788 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6445 + ... + 21012.

Almost surely, 2^199996788 is an apocalyptic number.

It is an amenable number.

199996788 is an abundant number, since it is smaller than the sum of its proper divisors (267448204).

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

199996788 is a wasteful number, since it uses less digits than its factorization.

199996788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28071 (or 28069 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 66.

The square root of 199996788 is about 14142.0220619259. The cubic root of 199996788 is about 584.8004169775.

The spelling of 199996788 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred eighty-eight".