199994646 has 32 divisors (see below), whose sum is σ = 426988800. Its totient is φ = 62264160.

The previous prime is 199994633. The next prime is 199994689. The reversal of 199994646 is 646499991.

199994646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4261 + ... + 20448.

It is an arithmetic number, because the mean of its divisors is an integer number (13343400).

Almost surely, 2^199994646 is an apocalyptic number.

199994646 is an abundant number, since it is smaller than the sum of its proper divisors (226994154).

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

199994646 is a wasteful number, since it uses less digits than its factorization.

199994646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24804.

The product of its digits is 3779136, while the sum is 57.

The square root of 199994646 is about 14141.9463299788. The cubic root of 199994646 is about 584.7983291990.

The spelling of 199994646 in words is "one hundred ninety-nine million, nine hundred ninety-four thousand, six hundred forty-six".