199995556 has 12 divisors (see below), whose sum is σ = 350181468. Its totient is φ = 99943712.

The previous prime is 199995517. The next prime is 199995559. The reversal of 199995556 is 655599991.

It can be written as a sum of positive squares in 2 ways, for example, as 40832100 + 159163456 = 6390^2 + 12616^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 199995556.

It is not an unprimeable number, because it can be changed into a prime (199995559) 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, 4531 + ... + 20506.

It is an arithmetic number, because the mean of its divisors is an integer number (29181789).

Almost surely, 2^199995556 is an apocalyptic number.

It is an amenable number.

199995556 is a deficient number, since it is larger than the sum of its proper divisors (150185912).

199995556 is a wasteful number, since it uses less digits than its factorization.

199995556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27038 (or 27036 counting only the distinct ones).

The product of its digits is 4920750, while the sum is 58.

The square root of 199995556 is about 14141.9785037314. The cubic root of 199995556 is about 584.7992161655.

The spelling of 199995556 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, five hundred fifty-six".