198079 has 4 divisors (see below), whose sum is σ = 226384. Its totient is φ = 169776.

The previous prime is 198073. The next prime is 198083. The reversal of 198079 is 970891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970891 = 29 ⋅33479.

It is a cyclic number.

It is not a de Polignac number, because 198079 - 2⁵ = 198047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14142 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (56596).

2¹⁹⁸⁰⁷⁹ is an apocalyptic number.

198079 is a deficient number, since it is larger than the sum of its proper divisors (28305).

198079 is an equidigital number, since it uses as much as digits as its factorization.

198079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28304.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 198079 is about 445.0606700215. The cubic root of 198079 is about 58.2925174795.

The spelling of 198079 in words is "one hundred ninety-eight thousand, seventy-nine".