198447 has 8 divisors (see below), whose sum is σ = 273840. Its totient is φ = 127680.

The previous prime is 198439. The next prime is 198461. The reversal of 198447 is 744891.

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

It is not a de Polignac number, because 198447 - 2³ = 198439 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198447.

It is not an unprimeable number, because it can be changed into a prime (198427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054 + ... + 1227.

It is an arithmetic number, because the mean of its divisors is an integer number (34230).

2¹⁹⁸⁴⁴⁷ is an apocalyptic number.

198447 is a deficient number, since it is larger than the sum of its proper divisors (75393).

198447 is a wasteful number, since it uses less digits than its factorization.

198447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313.

The product of its digits is 8064, while the sum is 33.

The square root of 198447 is about 445.4739049597. The cubic root of 198447 is about 58.3285946264.

The spelling of 198447 in words is "one hundred ninety-eight thousand, four hundred forty-seven".