199936972 has 12 divisors (see below), whose sum is σ = 350995680. Its totient is φ = 99652496.

The previous prime is 199936969. The next prime is 199936973. The reversal of 199936972 is 279639991.

It is not an unprimeable number, because it can be changed into a prime (199936973) 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, 77572 + ... + 80107.

It is an arithmetic number, because the mean of its divisors is an integer number (29249640).

Almost surely, 2^199936972 is an apocalyptic number.

It is an amenable number.

199936972 is a deficient number, since it is larger than the sum of its proper divisors (151058708).

199936972 is a wasteful number, since it uses less digits than its factorization.

199936972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158000 (or 157998 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 55.

The square root of 199936972 is about 14139.9070718304. The cubic root of 199936972 is about 584.7421095249.

The spelling of 199936972 in words is "one hundred ninety-nine million, nine hundred thirty-six thousand, nine hundred seventy-two".