199996156 has 12 divisors (see below), whose sum is σ = 351459360. Its totient is φ = 99579200.

The previous prime is 199996141. The next prime is 199996157. The reversal of 199996156 is 651699991.

It is a junction number, because it is equal to n+sod(n) for n = 199996097 and 199996106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199996157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103645 + ... + 105556.

It is an arithmetic number, because the mean of its divisors is an integer number (29288280).

Almost surely, 2^199996156 is an apocalyptic number.

It is an amenable number.

199996156 is a deficient number, since it is larger than the sum of its proper divisors (151463204).

199996156 is a wasteful number, since it uses less digits than its factorization.

199996156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209444 (or 209442 counting only the distinct ones).

The product of its digits is 1180980, while the sum is 55.

The square root of 199996156 is about 14141.9997171546. Note that the first 3 decimals coincide. The cubic root of 199996156 is about 584.7998009772.

The spelling of 199996156 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, one hundred fifty-six".