999416889828 has 96 divisors (see below), whose sum is σ = 2988402771200. Its totient is φ = 282927955968.

The previous prime is 999416889781. The next prime is 999416889829. The reversal of 999416889828 is 828988614999.

It is a happy number.

999416889828 is a `hidden beast` number, since 9 + 99 + 416 + 8 + 8 + 98 + 28 = 666.

It is not an unprimeable number, because it can be changed into a prime (999416889829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5981725 + ... + 6146532.

Almost surely, 2^999416889828 is an apocalyptic number.

It is an amenable number.

999416889828 is an abundant number, since it is smaller than the sum of its proper divisors (1988985881372).

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

999416889828 is a wasteful number, since it uses less digits than its factorization.

999416889828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12128386 (or 12128378 counting only the distinct ones).

The product of its digits is 1289945088, while the sum is 81.

The spelling of 999416889828 in words is "nine hundred ninety-nine billion, four hundred sixteen million, eight hundred eighty-nine thousand, eight hundred twenty-eight".