198829 has 2 divisors, whose sum is σ = 198830. Its totient is φ = 198828.

The previous prime is 198827. The next prime is 198833. The reversal of 198829 is 928891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189225 + 9604 = 435^2 + 98^2 .

It is a cyclic number.

It is not a de Polignac number, because 198829 - 2¹ = 198827 is a prime.

Together with 198827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99414 + 99415.

It is an arithmetic number, because the mean of its divisors is an integer number (99415).

2¹⁹⁸⁸²⁹ is an apocalyptic number.

It is an amenable number.

198829 is a deficient number, since it is larger than the sum of its proper divisors (1).

198829 is an equidigital number, since it uses as much as digits as its factorization.

198829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 37.

The square root of 198829 is about 445.9024557008. The cubic root of 198829 is about 58.3659971260.

It can be divided in two parts, 19882 and 9, that added together give a palindrome (19891).

The spelling of 198829 in words is "one hundred ninety-eight thousand, eight hundred twenty-nine".