199999356 has 48 divisors (see below), whose sum is σ = 507489696. Its totient is φ = 61046784.

The previous prime is 199999343. The next prime is 199999357. The reversal of 199999356 is 653999991.

It is a self number, because there is not a number n which added to its sum of digits gives 199999356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999357) 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, 5701 + ... + 20796.

It is an arithmetic number, because the mean of its divisors is an integer number (10572702).

Almost surely, 2^199999356 is an apocalyptic number.

It is an amenable number.

199999356 is an abundant number, since it is smaller than the sum of its proper divisors (307490340).

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

199999356 is a wasteful number, since it uses less digits than its factorization.

199999356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26558 (or 26556 counting only the distinct ones).

The product of its digits is 5314410, while the sum is 60.

The square root of 199999356 is about 14142.1128548743. The cubic root of 199999356 is about 584.8029199528.

The spelling of 199999356 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred fifty-six".