999998916 has 24 divisors (see below), whose sum is σ = 2666664000. Its totient is φ = 285713952.

The previous prime is 999998903. The next prime is 999998917. The reversal of 999998916 is 619899999.

It is not an unprimeable number, because it can be changed into a prime (999998917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5952291 + ... + 5952458.

It is an arithmetic number, because the mean of its divisors is an integer number (111111000).

Almost surely, 2^999998916 is an apocalyptic number.

It is an amenable number.

999998916 is an abundant number, since it is smaller than the sum of its proper divisors (1666665084).

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

999998916 is a wasteful number, since it uses less digits than its factorization.

999998916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11904763 (or 11904761 counting only the distinct ones).

The product of its digits is 25509168, while the sum is 69.

The square root of 999998916 is about 31622.7594621342. The cubic root of 999998916 is about 999.9996386665. Note that the first 3 decimals are identical.

The spelling of 999998916 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred sixteen".