99999999884 has 24 divisors (see below), whose sum is σ = 178739440320. Its totient is φ = 48931779456.

The previous prime is 99999999871. The next prime is 99999999907. The reversal of 99999999884 is 48899999999.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99999999793 and 99999999802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319562 + ... + 3349550.

It is an arithmetic number, because the mean of its divisors is an integer number (7447476680).

Almost surely, 2^99999999884 is an apocalyptic number.

99999999884 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

99999999884 is a deficient number, since it is larger than the sum of its proper divisors (78739440436).

99999999884 is a wasteful number, since it uses less digits than its factorization.

99999999884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47777 (or 47775 counting only the distinct ones).

The product of its digits is 11019960576, while the sum is 92.

The spelling of 99999999884 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred eighty-four".