9985444 has 24 divisors (see below), whose sum is σ = 20200320. Its totient is φ = 4230336.

The previous prime is 9985433. The next prime is 9985447. The reversal of 9985444 is 4445899.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9985444.

It is not an unprimeable number, because it can be changed into a prime (9985447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489 + ... + 4495.

It is an arithmetic number, because the mean of its divisors is an integer number (841680).

Almost surely, 2^9985444 is an apocalyptic number.

It is an amenable number.

9985444 is an abundant number, since it is smaller than the sum of its proper divisors (10214876).

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

9985444 is a wasteful number, since it uses less digits than its factorization.

9985444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107 (or 4105 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 9985444 is about 3159.9753163593. The cubic root of 9985444 is about 215.3388850715.

The spelling of 9985444 in words is "nine million, nine hundred eighty-five thousand, four hundred forty-four".