440640198 has 24 divisors (see below), whose sum is σ = 972736128. Its totient is φ = 144108432.

The previous prime is 440640163. The next prime is 440640209. The reversal of 440640198 is 891046044.

It is a happy number.

440640198 is a `hidden beast` number, since 4 + 4 + 0 + 640 + 1 + 9 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229990 + ... + 231897.

It is an arithmetic number, because the mean of its divisors is an integer number (40530672).

Almost surely, 2^440640198 is an apocalyptic number.

440640198 is an abundant number, since it is smaller than the sum of its proper divisors (532095930).

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

440640198 is a wasteful number, since it uses less digits than its factorization.

440640198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461948 (or 461945 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 440640198 is about 20991.4315376536. The cubic root of 440640198 is about 760.9591986243.

The spelling of 440640198 in words is "four hundred forty million, six hundred forty thousand, one hundred ninety-eight".