9985389 has 4 divisors (see below), whose sum is σ = 13313856. Its totient is φ = 6656924.

The previous prime is 9985373. The next prime is 9985397. The reversal of 9985389 is 9835899.

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.

It is a cyclic number.

It is not a de Polignac number, because 9985389 - 2⁴ = 9985373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985319) 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 3 ways as a sum of consecutive naturals, for example, 1664229 + ... + 1664234.

It is an arithmetic number, because the mean of its divisors is an integer number (3328464).

Almost surely, 2^9985389 is an apocalyptic number.

It is an amenable number.

9985389 is a deficient number, since it is larger than the sum of its proper divisors (3328467).

9985389 is a wasteful number, since it uses less digits than its factorization.

9985389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328466.

The product of its digits is 699840, while the sum is 51.

The square root of 9985389 is about 3159.9666137477. The cubic root of 9985389 is about 215.3384897073.

The spelling of 9985389 in words is "nine million, nine hundred eighty-five thousand, three hundred eighty-nine".