198279441 has 16 divisors (see below), whose sum is σ = 303224320. Its totient is φ = 127921680.

The previous prime is 198279439. The next prime is 198279491. The reversal of 198279441 is 144972891.

It is a happy number.

It is not a de Polignac number, because 198279441 - 2¹ = 198279439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198279401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117610 + ... + 119283.

It is an arithmetic number, because the mean of its divisors is an integer number (18951520).

Almost surely, 2^198279441 is an apocalyptic number.

It is an amenable number.

198279441 is a deficient number, since it is larger than the sum of its proper divisors (104944879).

198279441 is a wasteful number, since it uses less digits than its factorization.

198279441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236933 (or 236927 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 198279441 is about 14081.1732820813. The cubic root of 198279441 is about 583.1217339381.

The spelling of 198279441 in words is "one hundred ninety-eight million, two hundred seventy-nine thousand, four hundred forty-one".