199996982 has 4 divisors (see below), whose sum is σ = 299995476. Its totient is φ = 99998490.

The previous prime is 199996981. The next prime is 199996987. The reversal of 199996982 is 289699991.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199996981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999244 + ... + 49999247.

It is an arithmetic number, because the mean of its divisors is an integer number (74998869).

Almost surely, 2^199996982 is an apocalyptic number.

199996982 is a deficient number, since it is larger than the sum of its proper divisors (99998494).

199996982 is an equidigital number, since it uses as much as digits as its factorization.

199996982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99998493.

The product of its digits is 5668704, while the sum is 62.

The square root of 199996982 is about 14142.0289209151. The cubic root of 199996982 is about 584.8006060659.

The spelling of 199996982 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, nine hundred eighty-two".