998442129868 has 12 divisors (see below), whose sum is σ = 1751424024112. Its totient is φ = 498035265840.

The previous prime is 998442129821. The next prime is 998442129887. The reversal of 998442129868 is 868921244899.

It is a junction number, because it is equal to n+sod(n) for n = 998442129797 and 998442129806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296447880 + ... + 296451247.

Almost surely, 2^998442129868 is an apocalyptic number.

It is an amenable number.

998442129868 is a deficient number, since it is larger than the sum of its proper divisors (752981894244).

998442129868 is a wasteful number, since it uses less digits than its factorization.

998442129868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592899552 (or 592899550 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 70.

The spelling of 998442129868 in words is "nine hundred ninety-eight billion, four hundred forty-two million, one hundred twenty-nine thousand, eight hundred sixty-eight".