199898 has 8 divisors (see below), whose sum is σ = 302592. Its totient is φ = 99036.

The previous prime is 199889. The next prime is 199909. The reversal of 199898 is 898991.

199898 is digitally balanced in base 2, 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 super-4 number, since 4×199898⁴ (a number of 22 digits) contains 4444 as substring.

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, 140 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (37824).

2¹⁹⁹⁸⁹⁸ is an apocalyptic number.

199898 is a deficient number, since it is larger than the sum of its proper divisors (102694).

199898 is a wasteful number, since it uses less digits than its factorization.

199898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its digits is 46656, while the sum is 44.

The square root of 199898 is about 447.0995414894. The cubic root of 199898 is about 58.4704114134.

It can be divided in two parts, 1 and 99898, that added together give a palindrome (99899).

The spelling of 199898 in words is "one hundred ninety-nine thousand, eight hundred ninety-eight".