199867312 has 20 divisors (see below), whose sum is σ = 395483616. Its totient is φ = 97807040.

The previous prime is 199867273. The next prime is 199867319. The reversal of 199867312 is 213768991.

It is a happy number.

199867312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199867312² = 79893884812210688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199867319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132139 + ... + 133642.

Almost surely, 2^199867312 is an apocalyptic number.

It is an amenable number.

199867312 is a deficient number, since it is larger than the sum of its proper divisors (195616304).

199867312 is a wasteful number, since it uses less digits than its factorization.

199867312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265836 (or 265830 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 199867312 is about 14137.4436161564. The cubic root of 199867312 is about 584.6741916765.

The spelling of 199867312 in words is "one hundred ninety-nine million, eight hundred sixty-seven thousand, three hundred twelve".