199995892 has 12 divisors (see below), whose sum is σ = 350140896. Its totient is φ = 99955640.

The previous prime is 199995889. The next prime is 199995923. The reversal of 199995892 is 298599991.

It is a self number, because there is not a number n which added to its sum of digits gives 199995892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623 + ... + 20065.

It is an arithmetic number, because the mean of its divisors is an integer number (29178408).

Almost surely, 2^199995892 is an apocalyptic number.

It is an amenable number.

199995892 is a deficient number, since it is larger than the sum of its proper divisors (150145004).

199995892 is a wasteful number, since it uses less digits than its factorization.

199995892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21158 (or 21156 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 61.

The square root of 199995892 is about 14141.9903832523. The cubic root of 199995892 is about 584.7995436602.

The spelling of 199995892 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, eight hundred ninety-two".