199960056 has 32 divisors (see below), whose sum is σ = 555445200. Its totient is φ = 66653280.

The previous prime is 199960049. The next prime is 199960109. The reversal of 199960056 is 650069991.

199960056 = T₄₃₉ + T₄₄₀ + ... + T₁₀₈₆.

It is a junction number, because it is equal to n+sod(n) for n = 199959993 and 199960020.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 462655 + ... + 463086.

Almost surely, 2^199960056 is an apocalyptic number.

It is an amenable number.

199960056 is an abundant number, since it is smaller than the sum of its proper divisors (355485144).

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

199960056 is a wasteful number, since it uses less digits than its factorization.

199960056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925756 (or 925746 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 199960056 is about 14140.7233195477. The cubic root of 199960056 is about 584.7646127289.

The spelling of 199960056 in words is "one hundred ninety-nine million, nine hundred sixty thousand, fifty-six".