9985805452 has 36 divisors (see below), whose sum is σ = 21398162520. Its totient is φ = 4054385664.

The previous prime is 9985805449. The next prime is 9985805477. The reversal of 9985805452 is 2545085899.

It is a junction number, because it is equal to n+sod(n) for n = 9985805393 and 9985805402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1337013 + ... + 1344460.

Almost surely, 2^9985805452 is an apocalyptic number.

It is an amenable number.

9985805452 is an abundant number, since it is smaller than the sum of its proper divisors (11412357068).

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

9985805452 is a wasteful number, since it uses less digits than its factorization.

9985805452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681510 (or 2681501 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 55.

The square root of 9985805452 is about 99929.0020564601. The cubic root of 9985805452 is about 2153.4148331119.

The spelling of 9985805452 in words is "nine billion, nine hundred eighty-five million, eight hundred five thousand, four hundred fifty-two".