199886856 has 32 divisors (see below), whose sum is σ = 538157760. Its totient is φ = 61503552.

The previous prime is 199886851. The next prime is 199886857. The reversal of 199886856 is 658688991.

It is a self number, because there is not a number n which added to its sum of digits gives 199886856.

It is not an unprimeable number, because it can be changed into a prime (199886851) 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, 320020 + ... + 320643.

It is an arithmetic number, because the mean of its divisors is an integer number (16817430).

Almost surely, 2^199886856 is an apocalyptic number.

It is an amenable number.

199886856 is an abundant number, since it is smaller than the sum of its proper divisors (338270904).

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

199886856 is a wasteful number, since it uses less digits than its factorization.

199886856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640685 (or 640681 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 60.

The square root of 199886856 is about 14138.1348133338. The cubic root of 199886856 is about 584.6932484862.

The spelling of 199886856 in words is "one hundred ninety-nine million, eight hundred eighty-six thousand, eight hundred fifty-six".