998888 has 16 divisors (see below), whose sum is σ = 2043360. Its totient is φ = 454000.

The previous prime is 998861. The next prime is 998897. The reversal of 998888 is 888899.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

998888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5588 + ... + 5763.

It is an arithmetic number, because the mean of its divisors is an integer number (127710).

2⁹⁹⁸⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

998888 is an abundant number, since it is smaller than the sum of its proper divisors (1044472).

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

998888 is a wasteful number, since it uses less digits than its factorization.

998888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368 (or 11364 counting only the distinct ones).

The product of its digits is 331776, while the sum is 50.

The square root of 998888 is about 999.4438453460. The cubic root of 998888 is about 99.9629195855.

The spelling of 998888 in words is "nine hundred ninety-eight thousand, eight hundred eighty-eight".