9597939985 has 24 divisors (see below), whose sum is σ = 12274550136. Its totient is φ = 7203256320.

The previous prime is 9597939979. The next prime is 9597940007. The reversal of 9597939985 is 5899397959.

It can be written as a sum of positive squares in 12 ways, for example, as 475588864 + 9122351121 = 21808^2 + 95511^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9597939985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 441675 + ... + 462895.

It is an arithmetic number, because the mean of its divisors is an integer number (511439589).

Almost surely, 2^9597939985 is an apocalyptic number.

It is an amenable number.

9597939985 is a deficient number, since it is larger than the sum of its proper divisors (2676610151).

9597939985 is a wasteful number, since it uses less digits than its factorization.

9597939985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21573 (or 21556 counting only the distinct ones).

The product of its digits is 248005800, while the sum is 73.

The square root of 9597939985 is about 97969.0766772863. The cubic root of 9597939985 is about 2125.1651071713.

The spelling of 9597939985 in words is "nine billion, five hundred ninety-seven million, nine hundred thirty-nine thousand, nine hundred eighty-five".