998975488 has 96 divisors (see below), whose sum is σ = 2417688000. Its totient is φ = 402849792.

The previous prime is 998975479. The next prime is 998975489. The reversal of 998975488 is 884579899.

It is not an unprimeable number, because it can be changed into a prime (998975489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241663 + ... + 245761.

It is an arithmetic number, because the mean of its divisors is an integer number (25184250).

Almost surely, 2^998975488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998975488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208844000).

998975488 is an abundant number, since it is smaller than the sum of its proper divisors (1418712512).

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

998975488 is a wasteful number, since it uses less digits than its factorization.

998975488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145 (or 4125 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 67.

The square root of 998975488 is about 31606.5734934997. The cubic root of 998975488 is about 999.6583793086.

The spelling of 998975488 in words is "nine hundred ninety-eight million, nine hundred seventy-five thousand, four hundred eighty-eight".