998085204 has 18 divisors (see below), whose sum is σ = 2522937690. Its totient is φ = 332695056.

The previous prime is 998085203. The next prime is 998085227. The reversal of 998085204 is 402580899.

It can be written as a sum of positive squares in only one way, i.e., 858372804 + 139712400 = 29298^2 + 11820^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 998085204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998085203) 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 5 ways as a sum of consecutive naturals, for example, 13862259 + ... + 13862330.

It is an arithmetic number, because the mean of its divisors is an integer number (140163205).

Almost surely, 2^998085204 is an apocalyptic number.

It is an amenable number.

998085204 is an abundant number, since it is smaller than the sum of its proper divisors (1524852486).

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

998085204 is a wasteful number, since it uses less digits than its factorization.

998085204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27724599 (or 27724594 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 998085204 is about 31592.4865118275. The cubic root of 998085204 is about 999.3613268501.

The spelling of 998085204 in words is "nine hundred ninety-eight million, eighty-five thousand, two hundred four".