198539398 has 8 divisors (see below), whose sum is σ = 313483320. Its totient is φ = 94044960.

The previous prime is 198539389. The next prime is 198539477. The reversal of 198539398 is 893935891.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612323 + ... + 2612398.

It is an arithmetic number, because the mean of its divisors is an integer number (39185415).

Almost surely, 2^198539398 is an apocalyptic number.

198539398 is a deficient number, since it is larger than the sum of its proper divisors (114943922).

198539398 is a wasteful number, since it uses less digits than its factorization.

198539398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224742.

The product of its digits is 2099520, while the sum is 55.

The square root of 198539398 is about 14090.4009169363. The cubic root of 198539398 is about 583.3764592515.

The spelling of 198539398 in words is "one hundred ninety-eight million, five hundred thirty-nine thousand, three hundred ninety-eight".