9893443989 has 64 divisors (see below), whose sum is σ = 16105340160. Its totient is φ = 5319444480.

The previous prime is 9893443979. The next prime is 9893443993.

9893443989 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9893443989 - 2⁹ = 9893443477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9893443919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2897047 + ... + 2900459.

It is an arithmetic number, because the mean of its divisors is an integer number (251645940).

Almost surely, 2^9893443989 is an apocalyptic number.

It is an amenable number.

9893443989 is a deficient number, since it is larger than the sum of its proper divisors (6211896171).

9893443989 is a wasteful number, since it uses less digits than its factorization.

9893443989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702.

The product of its digits is 60466176, while the sum is 66.

The square root of 9893443989 is about 99465.7930597248. The cubic root of 9893443989 is about 2146.7550826006.

The spelling of 9893443989 in words is "nine billion, eight hundred ninety-three million, four hundred forty-three thousand, nine hundred eighty-nine".