9999998886 has 8 divisors (see below), whose sum is σ = 19999997784. Its totient is φ = 3333332960.

The previous prime is 9999998867. The next prime is 9999999001. The reversal of 9999998886 is 6888999999.

It is a sphenic number, since it is the product of 3 distinct primes.

9999998886 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9999998799 and 9999998808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833333235 + ... + 833333246.

It is an arithmetic number, because the mean of its divisors is an integer number (2499999723).

Almost surely, 2^9999998886 is an apocalyptic number.

9999998886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9999998886 is a wasteful number, since it uses less digits than its factorization.

9999998886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666666486.

The product of its digits is 1632586752, while the sum is 84.

The square root of 9999998886 is about 99999.9944299998. The cubic root of 9999998886 is about 2154.4346100305.

The spelling of 9999998886 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred eighty-six".