9689090085 has 24 divisors (see below), whose sum is σ = 16960712184. Its totient is φ = 5116348800.

The previous prime is 9689090077. The next prime is 9689090087. The reversal of 9689090085 is 5800909869.

It can be written as a sum of positive squares in 4 ways, for example, as 1774852641 + 7914237444 = 42129^2 + 88962^2 .

It is not a de Polignac number, because 9689090085 - 2³ = 9689090077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9689090087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061362 + ... + 1070451.

It is an arithmetic number, because the mean of its divisors is an integer number (706696341).

Almost surely, 2^9689090085 is an apocalyptic number.

It is an amenable number.

9689090085 is a deficient number, since it is larger than the sum of its proper divisors (7271622099).

9689090085 is a wasteful number, since it uses less digits than its factorization.

9689090085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131925 (or 2131922 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 9689090085 is about 98433.1757335910. The cubic root of 9689090085 is about 2131.8713732889.

The spelling of 9689090085 in words is "nine billion, six hundred eighty-nine million, ninety thousand, eighty-five".