199087404 has 12 divisors (see below), whose sum is σ = 464537304. Its totient is φ = 66362464.

The previous prime is 199087403. The next prime is 199087409. The reversal of 199087404 is 404780991.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (199087403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8295297 + ... + 8295320.

It is an arithmetic number, because the mean of its divisors is an integer number (38711442).

Almost surely, 2^199087404 is an apocalyptic number.

It is an amenable number.

199087404 is an abundant number, since it is smaller than the sum of its proper divisors (265449900).

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

199087404 is a wasteful number, since it uses less digits than its factorization.

199087404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16590624 (or 16590622 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 199087404 is about 14109.8335922150. The cubic root of 199087404 is about 583.9127090086.

The spelling of 199087404 in words is "one hundred ninety-nine million, eighty-seven thousand, four hundred four".