199683970 has 8 divisors (see below), whose sum is σ = 359431164. Its totient is φ = 79873584.

The previous prime is 199683949. The next prime is 199683997. The reversal of 199683970 is 79386991.

It can be written as a sum of positive squares in 2 ways, for example, as 196476289 + 3207681 = 14017^2 + 1791^2 .

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

It is an unprimeable number.

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, 9984189 + ... + 9984208.

Almost surely, 2^199683970 is an apocalyptic number.

199683970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199683970 is a deficient number, since it is larger than the sum of its proper divisors (159747194).

199683970 is a wasteful number, since it uses less digits than its factorization.

199683970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19968404.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 199683970 is about 14130.9578585459. The cubic root of 199683970 is about 584.4953594824.

The spelling of 199683970 in words is "one hundred ninety-nine million, six hundred eighty-three thousand, nine hundred seventy".