198343398 has 64 divisors (see below), whose sum is σ = 454574592. Its totient is φ = 57108480.

The previous prime is 198343381. The next prime is 198343423. The reversal of 198343398 is 893343891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292636 + ... + 293312.

It is an arithmetic number, because the mean of its divisors is an integer number (7102728).

Almost surely, 2^198343398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198343398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227287296).

198343398 is an abundant number, since it is smaller than the sum of its proper divisors (256231194).

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

198343398 is a wasteful number, since it uses less digits than its factorization.

198343398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909.

The product of its digits is 559872, while the sum is 48.

The square root of 198343398 is about 14083.4441100180. Note that the first 3 decimals coincide. The cubic root of 198343398 is about 583.1844244308.

It can be divided in two parts, 19834 and 3398, that added together give a palindrome (23232).

The spelling of 198343398 in words is "one hundred ninety-eight million, three hundred forty-three thousand, three hundred ninety-eight".