9985805022 has 32 divisors (see below), whose sum is σ = 20429402112. Its totient is φ = 3253086144.

The previous prime is 9985805021. The next prime is 9985805023. The reversal of 9985805022 is 2205085899.

It is an interprime number because it is at equal distance from previous prime (9985805021) and next prime (9985805023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985805021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46743 + ... + 148850.

It is an arithmetic number, because the mean of its divisors is an integer number (638418816).

Almost surely, 2^9985805022 is an apocalyptic number.

9985805022 is an abundant number, since it is smaller than the sum of its proper divisors (10443597090).

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

9985805022 is a wasteful number, since it uses less digits than its factorization.

9985805022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195792.

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 9985805022 is about 99928.9999049325. Note that the first 4 decimals coincide. The cubic root of 9985805022 is about 2153.4148022025.

The spelling of 9985805022 in words is "nine billion, nine hundred eighty-five million, eight hundred five thousand, twenty-two".