198440606 has 16 divisors (see below), whose sum is σ = 366352224. Its totient is φ = 78503904.

The previous prime is 198440597. The next prime is 198440629. The reversal of 198440606 is 606044891.

It is a self number, because there is not a number n which added to its sum of digits gives 198440606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544985 + ... + 545348.

It is an arithmetic number, because the mean of its divisors is an integer number (22897014).

Almost surely, 2^198440606 is an apocalyptic number.

198440606 is a deficient number, since it is larger than the sum of its proper divisors (167911618).

198440606 is a wasteful number, since it uses less digits than its factorization.

198440606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090355.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 198440606 is about 14086.8948317221. The cubic root of 198440606 is about 583.2796816688.

The spelling of 198440606 in words is "one hundred ninety-eight million, four hundred forty thousand, six hundred six".