199865468 has 24 divisors (see below), whose sum is σ = 382368000. Its totient is φ = 90655920.

The previous prime is 199865443. The next prime is 199865507. The reversal of 199865468 is 864568991.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 17405 + ... + 26507.

It is an arithmetic number, because the mean of its divisors is an integer number (15932000).

Almost surely, 2^199865468 is an apocalyptic number.

It is an amenable number.

199865468 is a deficient number, since it is larger than the sum of its proper divisors (182502532).

199865468 is a wasteful number, since it uses less digits than its factorization.

199865468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617 (or 9615 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 56.

The square root of 199865468 is about 14137.3783991234. The cubic root of 199865468 is about 584.6723935794.

The spelling of 199865468 in words is "one hundred ninety-nine million, eight hundred sixty-five thousand, four hundred sixty-eight".