9899999284 has 12 divisors (see below), whose sum is σ = 19799998624. Its totient is φ = 4242856824.

The previous prime is 9899999281. The next prime is 9899999321. The reversal of 9899999284 is 4829999989.

9899999284 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 9899999284.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9899999281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176785674 + ... + 176785729.

Almost surely, 2^9899999284 is an apocalyptic number.

It is an amenable number.

9899999284 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.

9899999284 is a wasteful number, since it uses less digits than its factorization.

9899999284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353571414 (or 353571412 counting only the distinct ones).

The product of its digits is 272097792, while the sum is 76.

The square root of 9899999284 is about 99498.7401126266. The cubic root of 9899999284 is about 2147.2291172541.

The spelling of 9899999284 in words is "nine billion, eight hundred ninety-nine million, nine hundred ninety-nine thousand, two hundred eighty-four".