399198 has 8 divisors (see below), whose sum is σ = 798408. Its totient is φ = 133064.

The previous prime is 399197. The next prime is 399221. The reversal of 399198 is 891993.

399198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

399198 is an admirable number.

It is a Curzon number.

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 399198.

It is not an unprimeable number, because it can be changed into a prime (399197) 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, 33261 + ... + 33272.

It is an arithmetic number, because the mean of its divisors is an integer number (99801).

2³⁹⁹¹⁹⁸ is an apocalyptic number.

399198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399198 is a wasteful number, since it uses less digits than its factorization.

399198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66538.

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

The square root of 399198 is about 631.8211772329. The cubic root of 399198 is about 73.6313538042.

The spelling of 399198 in words is "three hundred ninety-nine thousand, one hundred ninety-eight".