198992 has 10 divisors (see below), whose sum is σ = 385578. Its totient is φ = 99488.

The previous prime is 198977. The next prime is 198997. The reversal of 198992 is 299891.

It can be written as a sum of positive squares in only one way, i.e., 118336 + 80656 = 344^2 + 284^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198992.

It is not an unprimeable number, because it can be changed into a prime (198997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203 + ... + 6234.

2¹⁹⁸⁹⁹² is an apocalyptic number.

It is an amenable number.

198992 is a deficient number, since it is larger than the sum of its proper divisors (186586).

198992 is a wasteful number, since it uses less digits than its factorization.

198992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12445 (or 12439 counting only the distinct ones).

The product of its digits is 11664, while the sum is 38.

The square root of 198992 is about 446.0851936570. The cubic root of 198992 is about 58.3819422496.

The spelling of 198992 in words is "one hundred ninety-eight thousand, nine hundred ninety-two".