199403992 has 16 divisors (see below), whose sum is σ = 383002200. Its totient is φ = 97270080.

The previous prime is 199403977. The next prime is 199404001. The reversal of 199403992 is 299304991.

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, 303642 + ... + 304297.

Almost surely, 2^199403992 is an apocalyptic number.

It is an amenable number.

199403992 is a deficient number, since it is larger than the sum of its proper divisors (183598208).

199403992 is a wasteful number, since it uses less digits than its factorization.

199403992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607986 (or 607982 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 199403992 is about 14121.0478364745. The cubic root of 199403992 is about 584.2220569830. Note that the first 3 decimals are identical.

Subtracting 199403992 from its reverse (299304991), we obtain a palindrome (99900999).

It can be divided in two parts, 19940 and 3992, that added together give a palindrome (23932).

The spelling of 199403992 in words is "one hundred ninety-nine million, four hundred three thousand, nine hundred ninety-two".