189398 has 8 divisors (see below), whose sum is σ = 309960. Its totient is φ = 86080.

The previous prime is 189391. The next prime is 189401. The reversal of 189398 is 893981.

189398 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189391) 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, 4283 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (38745).

2¹⁸⁹³⁹⁸ is an apocalyptic number.

189398 is a deficient number, since it is larger than the sum of its proper divisors (120562).

189398 is a wasteful number, since it uses less digits than its factorization.

189398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622.

The product of its digits is 15552, while the sum is 38.

The square root of 189398 is about 435.1988051454. The cubic root of 189398 is about 57.4281901295.

It can be divided in two parts, 1893 and 98, that added together give a palindrome (1991).

The spelling of 189398 in words is "one hundred eighty-nine thousand, three hundred ninety-eight".