198399 has 8 divisors (see below), whose sum is σ = 271152. Its totient is φ = 128960.

The previous prime is 198397. The next prime is 198409. The reversal of 198399 is 993891.

198399 is nontrivially palindromic in base 13.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198399 - 2¹ = 198397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (33894).

2¹⁹⁸³⁹⁹ is an apocalyptic number.

198399 is a deficient number, since it is larger than the sum of its proper divisors (72753).

198399 is a wasteful number, since it uses less digits than its factorization.

198399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657.

The product of its digits is 17496, while the sum is 39.

The square root of 198399 is about 445.4200264918. The cubic root of 198399 is about 58.3238914423.

The spelling of 198399 in words is "one hundred ninety-eight thousand, three hundred ninety-nine".