998885868 has 24 divisors (see below), whose sum is σ = 2346380400. Its totient is φ = 330726720.

The previous prime is 998885819. The next prime is 998885869. The reversal of 998885868 is 868588899.

It is a super-2 number, since 2×998885868² = 1995545954580226848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998885869) 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 7 ways as a sum of consecutive naturals, for example, 277543 + ... + 281118.

It is an arithmetic number, because the mean of its divisors is an integer number (97765850).

Almost surely, 2^998885868 is an apocalyptic number.

It is an amenable number.

998885868 is an abundant number, since it is smaller than the sum of its proper divisors (1347494532).

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

998885868 is a wasteful number, since it uses less digits than its factorization.

998885868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558817 (or 558815 counting only the distinct ones).

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

The square root of 998885868 is about 31605.1557186482. The cubic root of 998885868 is about 999.6284846601.

The spelling of 998885868 in words is "nine hundred ninety-eight million, eight hundred eighty-five thousand, eight hundred sixty-eight".