9985398633 has 32 divisors (see below), whose sum is σ = 17073918720. Its totient is φ = 5649436800.

The previous prime is 9985398589. The next prime is 9985398649. The reversal of 9985398633 is 3368935899.

9985398633 is a `hidden beast` number, since 9 + 98 + 539 + 8 + 6 + 3 + 3 = 666.

9985398633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9985398633 - 2¹⁴ = 9985382249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9985398653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242460 + ... + 280637.

It is an arithmetic number, because the mean of its divisors is an integer number (533559960).

Almost surely, 2^9985398633 is an apocalyptic number.

It is an amenable number.

9985398633 is a deficient number, since it is larger than the sum of its proper divisors (7088520087).

9985398633 is a wasteful number, since it uses less digits than its factorization.

9985398633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523214 (or 523208 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The square root of 9985398633 is about 99926.9664955361. The cubic root of 9985398633 is about 2153.3855895365.

The spelling of 9985398633 in words is "nine billion, nine hundred eighty-five million, three hundred ninety-eight thousand, six hundred thirty-three".