199441982 has 16 divisors (see below), whose sum is σ = 307919232. Its totient is φ = 96844440.

The previous prime is 199441937. The next prime is 199442027. The reversal of 199441982 is 289144991.

It is an interprime number because it is at equal distance from previous prime (199441937) and next prime (199442027).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968 + ... + 19995.

It is an arithmetic number, because the mean of its divisors is an integer number (19244952).

Almost surely, 2^199441982 is an apocalyptic number.

199441982 is a deficient number, since it is larger than the sum of its proper divisors (108477250).

199441982 is a wasteful number, since it uses less digits than its factorization.

199441982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21103.

The product of its digits is 186624, while the sum is 47.

The square root of 199441982 is about 14122.3929275460. The cubic root of 199441982 is about 584.2591561844.

The spelling of 199441982 in words is "one hundred ninety-nine million, four hundred forty-one thousand, nine hundred eighty-two".