199872408 has 32 divisors (see below), whose sum is σ = 516913200. Its totient is φ = 64326528.

The previous prime is 199872359. The next prime is 199872433. The reversal of 199872408 is 804278991.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 142891 + ... + 144282.

Almost surely, 2^199872408 is an apocalyptic number.

It is an amenable number.

199872408 is an abundant number, since it is smaller than the sum of its proper divisors (317040792).

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

199872408 is a wasteful number, since it uses less digits than its factorization.

199872408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287211 (or 287207 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 199872408 is about 14137.6238456114. The cubic root of 199872408 is about 584.6791607638.

The spelling of 199872408 in words is "one hundred ninety-nine million, eight hundred seventy-two thousand, four hundred eight".