198291404 has 12 divisors (see below), whose sum is σ = 355080264. Its totient is φ = 96839904.

The previous prime is 198291403. The next prime is 198291461. The reversal of 198291404 is 404192891.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (198291403) 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, 576257 + ... + 576600.

It is an arithmetic number, because the mean of its divisors is an integer number (29590022).

Almost surely, 2^198291404 is an apocalyptic number.

It is an amenable number.

198291404 is a deficient number, since it is larger than the sum of its proper divisors (156788860).

198291404 is a wasteful number, since it uses less digits than its factorization.

198291404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152904 (or 1152902 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 198291404 is about 14081.5980627200. The cubic root of 198291404 is about 583.1334610659.

The spelling of 198291404 in words is "one hundred ninety-eight million, two hundred ninety-one thousand, four hundred four".