9895665989 has 4 divisors (see below), whose sum is σ = 10795272000. Its totient is φ = 8996059980.

The previous prime is 9895665973. The next prime is 9895666003.

9895665989 is nontrivially palindromic in base 10.

9895665989 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.

It is a cyclic number.

It is not a de Polignac number, because 9895665989 - 2⁴ = 9895665973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9895665919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449802989 + ... + 449803010.

It is an arithmetic number, because the mean of its divisors is an integer number (2698818000).

Almost surely, 2^9895665989 is an apocalyptic number.

It is an amenable number.

9895665989 is a deficient number, since it is larger than the sum of its proper divisors (899606011).

9895665989 is a wasteful number, since it uses less digits than its factorization.

9895665989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899606010.

The product of its digits is 377913600, while the sum is 74.

The square root of 9895665989 is about 99476.9621017852. The cubic root of 9895665989 is about 2146.9157860837.

The spelling of 9895665989 in words is "nine billion, eight hundred ninety-five million, six hundred sixty-five thousand, nine hundred eighty-nine".