9985583388 has 24 divisors (see below), whose sum is σ = 25417848960. Its totient is φ = 3025934320.

The previous prime is 9985583303. The next prime is 9985583411. The reversal of 9985583388 is 8833855899.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37824048 + ... + 37824311.

It is an arithmetic number, because the mean of its divisors is an integer number (1059077040).

Almost surely, 2^9985583388 is an apocalyptic number.

It is an amenable number.

9985583388 is an abundant number, since it is smaller than the sum of its proper divisors (15432265572).

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

9985583388 is a wasteful number, since it uses less digits than its factorization.

9985583388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75648377 (or 75648375 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 66.

The square root of 9985583388 is about 99927.8909414184. The cubic root of 9985583388 is about 2153.3988704718.

The spelling of 9985583388 in words is "nine billion, nine hundred eighty-five million, five hundred eighty-three thousand, three hundred eighty-eight".