198279 has 6 divisors (see below), whose sum is σ = 286416. Its totient is φ = 132180.

The previous prime is 198277. The next prime is 198281. The reversal of 198279 is 972891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198277) and next prime (198281).

It is not a de Polignac number, because 198279 - 2¹ = 198277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11007 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (47736).

2¹⁹⁸²⁷⁹ is an apocalyptic number.

198279 is a deficient number, since it is larger than the sum of its proper divisors (88137).

198279 is a wasteful number, since it uses less digits than its factorization.

198279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22037 (or 22034 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 198279 is about 445.2853018010. The cubic root of 198279 is about 58.3121301624.

The spelling of 198279 in words is "one hundred ninety-eight thousand, two hundred seventy-nine".