998884 has 6 divisors (see below), whose sum is σ = 1748054. Its totient is φ = 499440.

The previous prime is 998861. The next prime is 998897. The reversal of 998884 is 488899.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 77284 = 960^2 + 278^2 .

It is a nialpdrome in base 10.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 124857 + ... + 124864.

2⁹⁹⁸⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

998884 is a deficient number, since it is larger than the sum of its proper divisors (749170).

998884 is a wasteful number, since it uses less digits than its factorization.

998884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249725 (or 249723 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 998884 is about 999.4418442311. The cubic root of 998884 is about 99.9627861530.

The spelling of 998884 in words is "nine hundred ninety-eight thousand, eight hundred eighty-four".