199664592 has 40 divisors (see below), whose sum is σ = 546143616. Its totient is φ = 62639616.

The previous prime is 199664581. The next prime is 199664599. The reversal of 199664592 is 295466991.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199664599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121528 + ... + 123159.

Almost surely, 2^199664592 is an apocalyptic number.

199664592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199664592 is an abundant number, since it is smaller than the sum of its proper divisors (346479024).

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

199664592 is a wasteful number, since it uses less digits than its factorization.

199664592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244715 (or 244709 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The square root of 199664592 is about 14130.2721842150. The cubic root of 199664592 is about 584.4764517429.

The spelling of 199664592 in words is "one hundred ninety-nine million, six hundred sixty-four thousand, five hundred ninety-two".