998886588 has 96 divisors (see below), whose sum is σ = 2766274560. Its totient is φ = 274518720.

The previous prime is 998886587. The next prime is 998886607. The reversal of 998886588 is 885688899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998886583) 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 31 ways as a sum of consecutive naturals, for example, 465045 + ... + 467187.

It is an arithmetic number, because the mean of its divisors is an integer number (28815360).

Almost surely, 2^998886588 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 998886588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383137280).

998886588 is an abundant number, since it is smaller than the sum of its proper divisors (1767387972).

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

998886588 is a wasteful number, since it uses less digits than its factorization.

998886588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367 (or 2365 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 69.

The square root of 998886588 is about 31605.1671091928. The cubic root of 998886588 is about 999.6287248385.

The spelling of 998886588 in words is "nine hundred ninety-eight million, eight hundred eighty-six thousand, five hundred eighty-eight".