198955944 has 144 divisors (see below), whose sum is σ = 607812660. Its totient is φ = 58713600.

The previous prime is 198955943. The next prime is 198955997. The reversal of 198955944 is 449559891.

198955944 is a `hidden beast` number, since 1 + 9 + 89 + 559 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149084100 + 49871844 = 12210^2 + 7062^2 .

It is a super-2 number, since 2×198955944² = 79166935305862272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198955943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 356914 + ... + 357470.

Almost surely, 2^198955944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198955944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303906330).

198955944 is an abundant number, since it is smaller than the sum of its proper divisors (408856716).

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

198955944 is a wasteful number, since it uses less digits than its factorization.

198955944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 614 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 198955944 is about 14105.1743697127. The cubic root of 198955944 is about 583.7841589935.

The spelling of 198955944 in words is "one hundred ninety-eight million, nine hundred fifty-five thousand, nine hundred forty-four".