197844 has 12 divisors (see below), whose sum is σ = 461664. Its totient is φ = 65944.

The previous prime is 197837. The next prime is 197887. The reversal of 197844 is 448791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

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 197844.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8232 + ... + 8255.

It is an arithmetic number, because the mean of its divisors is an integer number (38472).

2¹⁹⁷⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

197844 is an abundant number, since it is smaller than the sum of its proper divisors (263820).

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

197844 is a wasteful number, since it uses less digits than its factorization.

197844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16494 (or 16492 counting only the distinct ones).

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

The square root of 197844 is about 444.7965827207. The cubic root of 197844 is about 58.2694557002.

The spelling of 197844 in words is "one hundred ninety-seven thousand, eight hundred forty-four".