9985489 has 4 divisors (see below), whose sum is σ = 10006000. Its totient is φ = 9964980.

The previous prime is 9985453. The next prime is 9985499. The reversal of 9985489 is 9845899.

9985489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 9845899 = 7 ⋅1406557.

It is a cyclic number.

It is not a de Polignac number, because 9985489 - 2⁷ = 9985361 is a prime.

It is a Duffinian number.

9985489 is a modest number, since divided by 5489 gives 998 as remainder.

9985489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9985429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9507 + ... + 10504.

It is an arithmetic number, because the mean of its divisors is an integer number (2501500).

Almost surely, 2^9985489 is an apocalyptic number.

It is an amenable number.

9985489 is a deficient number, since it is larger than the sum of its proper divisors (20511).

9985489 is a wasteful number, since it uses less digits than its factorization.

9985489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20510.

The product of its digits is 933120, while the sum is 52.

The square root of 9985489 is about 3159.9824366601. The cubic root of 9985489 is about 215.3392085502.

The spelling of 9985489 in words is "nine million, nine hundred eighty-five thousand, four hundred eighty-nine".