199880982 has 48 divisors (see below), whose sum is σ = 498880512. Its totient is φ = 56654640.

The previous prime is 199880977. The next prime is 199880983. The reversal of 199880982 is 289088991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199880983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9757 + ... + 22247.

It is an arithmetic number, because the mean of its divisors is an integer number (10393344).

Almost surely, 2^199880982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199880982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249440256).

199880982 is an abundant number, since it is smaller than the sum of its proper divisors (298999530).

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

199880982 is a wasteful number, since it uses less digits than its factorization.

199880982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12633 (or 12630 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The square root of 199880982 is about 14137.9270757774. The cubic root of 199880982 is about 584.6875210431.

The spelling of 199880982 in words is "one hundred ninety-nine million, eight hundred eighty thousand, nine hundred eighty-two".