199899474 has 8 divisors (see below), whose sum is σ = 399798960. Its totient is φ = 66633156.

The previous prime is 199899473. The next prime is 199899521. The reversal of 199899474 is 474998991.

It is a sphenic number, since it is the product of 3 distinct primes.

199899474 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (199899473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16658284 + ... + 16658295.

It is an arithmetic number, because the mean of its divisors is an integer number (49974870).

Almost surely, 2^199899474 is an apocalyptic number.

199899474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199899474 is a wasteful number, since it uses less digits than its factorization.

199899474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33316584.

The product of its digits is 5878656, while the sum is 60.

The square root of 199899474 is about 14138.5810462012. The cubic root of 199899474 is about 584.7055512864.

The spelling of 199899474 in words is "one hundred ninety-nine million, eight hundred ninety-nine thousand, four hundred seventy-four".