999998888898 has 32 divisors (see below), whose sum is σ = 2033176079232. Its totient is φ = 327846960000.

The previous prime is 999998888881. The next prime is 999998888899. The reversal of 999998888898 is 898888899999.

It is not an unprimeable number, because it can be changed into a prime (999998888899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5372611 + ... + 5555622.

It is an arithmetic number, because the mean of its divisors is an integer number (63536752476).

Almost surely, 2^999998888898 is an apocalyptic number.

999998888898 is an abundant number, since it is smaller than the sum of its proper divisors (1033177190334).

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

999998888898 is a wasteful number, since it uses less digits than its factorization.

999998888898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928490.

The product of its digits is 139314069504, while the sum is 102.

The spelling of 999998888898 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eighty-eight thousand, eight hundred ninety-eight".