9985321 has 4 divisors (see below), whose sum is σ = 10023552. Its totient is φ = 9947092.

The previous prime is 9985319. The next prime is 9985333. The reversal of 9985321 is 1235899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1235899 = 7 ⋅176557.

It is a cyclic number.

It is not a de Polignac number, because 9985321 - 2¹ = 9985319 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9985351) 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 3 ways as a sum of consecutive naturals, for example, 18721 + ... + 19246.

It is an arithmetic number, because the mean of its divisors is an integer number (2505888).

Almost surely, 2^9985321 is an apocalyptic number.

It is an amenable number.

9985321 is a deficient number, since it is larger than the sum of its proper divisors (38231).

9985321 is a wasteful number, since it uses less digits than its factorization.

9985321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38230.

The product of its digits is 19440, while the sum is 37.

The square root of 9985321 is about 3159.9558541220. The cubic root of 9985321 is about 215.3380008914.

The spelling of 9985321 in words is "nine million, nine hundred eighty-five thousand, three hundred twenty-one".