199672986 has 8 divisors (see below), whose sum is σ = 399345984. Its totient is φ = 66557660.

The previous prime is 199672981. The next prime is 199672999. The reversal of 199672986 is 689276991.

It is a sphenic number, since it is the product of 3 distinct primes.

199672986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (199672981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16639410 + ... + 16639421.

It is an arithmetic number, because the mean of its divisors is an integer number (49918248).

Almost surely, 2^199672986 is an apocalyptic number.

199672986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199672986 is a wasteful number, since it uses less digits than its factorization.

199672986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33278836.

The product of its digits is 2939328, while the sum is 57.

The square root of 199672986 is about 14130.5692029727. The cubic root of 199672986 is about 584.4846421896.

The spelling of 199672986 in words is "one hundred ninety-nine million, six hundred seventy-two thousand, nine hundred eighty-six".