988998 has 16 divisors (see below), whose sum is σ = 1990656. Its totient is φ = 327560.

The previous prime is 988979. The next prime is 989011. The reversal of 988998 is 899889.

It is a self number, because there is not a number n which added to its sum of digits gives 988998.

It is a congruent number.

It is an unprimeable number.

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, 715 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (124416).

2⁹⁸⁸⁹⁹⁸ is an apocalyptic number.

988998 is an abundant number, since it is smaller than the sum of its proper divisors (1001658).

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

988998 is a wasteful number, since it uses less digits than its factorization.

988998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059.

The product of its digits is 373248, while the sum is 51.

The square root of 988998 is about 994.4837856898. The cubic root of 988998 is about 99.6319134520.

The spelling of 988998 in words is "nine hundred eighty-eight thousand, nine hundred ninety-eight".