199880356 has 36 divisors (see below), whose sum is σ = 401070852. Its totient is φ = 86820864.

The previous prime is 199880309. The next prime is 199880357. The reversal of 199880356 is 653088991.

It can be written as a sum of positive squares in 6 ways, for example, as 29160000 + 170720356 = 5400^2 + 13066^2 .

It is not an unprimeable number, because it can be changed into a prime (199880357) 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 11 ways as a sum of consecutive naturals, for example, 2796 + ... + 20188.

It is an arithmetic number, because the mean of its divisors is an integer number (11140857).

Almost surely, 2^199880356 is an apocalyptic number.

It is an amenable number.

199880356 is an abundant number, since it is smaller than the sum of its proper divisors (201190496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199880356 is a wasteful number, since it uses less digits than its factorization.

199880356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17440 (or 17425 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 199880356 is about 14137.9049367295. The cubic root of 199880356 is about 584.6869106552.

The spelling of 199880356 in words is "one hundred ninety-nine million, eight hundred eighty thousand, three hundred fifty-six".