9727985 has 4 divisors (see below), whose sum is σ = 11673588. Its totient is φ = 7782384.

The previous prime is 9727973. The next prime is 9727997. The reversal of 9727985 is 5897279.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9727973) and next prime (9727997).

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 7845601 = 1372^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 9727985 - 2¹⁰ = 9726961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972794 + ... + 972803.

It is an arithmetic number, because the mean of its divisors is an integer number (2918397).

Almost surely, 2^9727985 is an apocalyptic number.

It is an amenable number.

9727985 is a deficient number, since it is larger than the sum of its proper divisors (1945603).

9727985 is a wasteful number, since it uses less digits than its factorization.

9727985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945602.

The product of its digits is 317520, while the sum is 47.

The square root of 9727985 is about 3118.9717857012. The cubic root of 9727985 is about 213.4720221772.

It can be divided in two parts, 97 and 27985, that added together give a palindrome (28082).

The spelling of 9727985 in words is "nine million, seven hundred twenty-seven thousand, nine hundred eighty-five".