199995804 has 144 divisors (see below), whose sum is σ = 553058688. Its totient is φ = 63125568.

The previous prime is 199995797. The next prime is 199995811. The reversal of 199995804 is 408599991.

199995804 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199995797) and next prime (199995811).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 47 ways as a sum of consecutive naturals, for example, 2409547 + ... + 2409629.

Almost surely, 2^199995804 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 199995804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276529344).

199995804 is an abundant number, since it is smaller than the sum of its proper divisors (353062884).

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

199995804 is a wasteful number, since it uses less digits than its factorization.

199995804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The square root of 199995804 is about 14141.9872719501. The cubic root of 199995804 is about 584.7994578878.

The spelling of 199995804 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, eight hundred four".