9855338992 has 40 divisors (see below), whose sum is σ = 19406257920. Its totient is φ = 4847774400.

The previous prime is 9855338989. The next prime is 9855339037. The reversal of 9855338992 is 2998335589.

It is a self number, because there is not a number n which added to its sum of digits gives 9855338992.

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, 301867 + ... + 332917.

It is an arithmetic number, because the mean of its divisors is an integer number (485156448).

Almost surely, 2^9855338992 is an apocalyptic number.

It is an amenable number.

9855338992 is a deficient number, since it is larger than the sum of its proper divisors (9550918928).

9855338992 is a wasteful number, since it uses less digits than its factorization.

9855338992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31381 (or 31375 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 61.

The square root of 9855338992 is about 99274.0600156959. The cubic root of 9855338992 is about 2143.9954321114.

The spelling of 9855338992 in words is "nine billion, eight hundred fifty-five million, three hundred thirty-eight thousand, nine hundred ninety-two".