999998888900 has 72 divisors (see below), whose sum is σ = 2367427287456. Its totient is φ = 363611814400.

The previous prime is 999998888899. The next prime is 999998888953. The reversal of 999998888900 is 9888899999.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31682927 + ... + 31714473.

It is an arithmetic number, because the mean of its divisors is an integer number (32880934548).

Almost surely, 2^999998888900 is an apocalyptic number.

It is an amenable number.

999998888900 is an abundant number, since it is smaller than the sum of its proper divisors (1367428398556).

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

999998888900 is a wasteful number, since it uses less digits than its factorization.

999998888900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60389 (or 60382 counting only the distinct ones).

The product of its (nonzero) digits is 2176782336, while the sum is 86.

It can be divided in two parts, 99 and 9998888900, that added together give a palindrome (9998888999).

The spelling of 999998888900 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eighty-eight thousand, nine hundred".