198404444 has 12 divisors (see below), whose sum is σ = 396808944. Its totient is φ = 85030464.

The previous prime is 198404443. The next prime is 198404473. The reversal of 198404444 is 444404891.

It is a happy number.

198404444 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 198404398 and 198404407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198404443) 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, 3542909 + ... + 3542964.

It is an arithmetic number, because the mean of its divisors is an integer number (33067412).

Almost surely, 2^198404444 is an apocalyptic number.

198404444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

198404444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

198404444 is a wasteful number, since it uses less digits than its factorization.

198404444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7085884 (or 7085882 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 198404444 is about 14085.6112398433. The cubic root of 198404444 is about 583.2442489993.

The spelling of 198404444 in words is "one hundred ninety-eight million, four hundred four thousand, four hundred forty-four".