199444564 has 12 divisors (see below), whose sum is σ = 380757888. Its totient is φ = 90656600.

The previous prime is 199444543. The next prime is 199444589. The reversal of 199444564 is 465444991.

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 3 ways as a sum of consecutive naturals, for example, 2266372 + ... + 2266459.

It is an arithmetic number, because the mean of its divisors is an integer number (31729824).

Almost surely, 2^199444564 is an apocalyptic number.

It is an amenable number.

199444564 is a deficient number, since it is larger than the sum of its proper divisors (181313324).

199444564 is a wasteful number, since it uses less digits than its factorization.

199444564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532846 (or 4532844 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 199444564 is about 14122.4843423528. The cubic root of 199444564 is about 584.2616774701.

The spelling of 199444564 in words is "one hundred ninety-nine million, four hundred forty-four thousand, five hundred sixty-four".