198411 has 4 divisors (see below), whose sum is σ = 264552. Its totient is φ = 132272.

The previous prime is 198409. The next prime is 198413. The reversal of 198411 is 114891.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (198409) and next prime (198413).

It is a cyclic number.

It is not a de Polignac number, because 198411 - 2¹ = 198409 is a prime.

It is an Ulam number.

It is a D-number.

198411 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (198413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33066 + ... + 33071.

It is an arithmetic number, because the mean of its divisors is an integer number (66138).

2¹⁹⁸⁴¹¹ is an apocalyptic number.

198411 is a deficient number, since it is larger than the sum of its proper divisors (66141).

198411 is an equidigital number, since it uses as much as digits as its factorization.

198411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66140.

The product of its digits is 288, while the sum is 24.

The square root of 198411 is about 445.4334967198. The cubic root of 198411 is about 58.3250673095.

The spelling of 198411 in words is "one hundred ninety-eight thousand, four hundred eleven".