9985976 has 128 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 3386880.

The previous prime is 9985973. The next prime is 9985993. The reversal of 9985976 is 6795899.

It is an Ulam number.

Its product of digits (1224720) is a multiple of the sum of its prime divisors (105).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232211 + ... + 232253.

It is an arithmetic number, because the mean of its divisors is an integer number (207900).

Almost surely, 2^9985976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9985976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13305600).

9985976 is an abundant number, since it is smaller than the sum of its proper divisors (16625224).

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

9985976 is a wasteful number, since it uses less digits than its factorization.

9985976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 105 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 9985976 is about 3160.0594931108. The cubic root of 9985976 is about 215.3427092464.

The spelling of 9985976 in words is "nine million, nine hundred eighty-five thousand, nine hundred seventy-six".