9739985 has 4 divisors (see below), whose sum is σ = 11687988. Its totient is φ = 7791984.

The previous prime is 9739979. The next prime is 9740009. The reversal of 9739985 is 5899379.

9739985 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7392961 + 2347024 = 2719^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 9739985 - 2¹² = 9735889 is a prime.

It is a Duffinian 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, 973994 + ... + 974003.

It is an arithmetic number, because the mean of its divisors is an integer number (2921997).

Almost surely, 2^9739985 is an apocalyptic number.

It is an amenable number.

9739985 is a deficient number, since it is larger than the sum of its proper divisors (1948003).

9739985 is a wasteful number, since it uses less digits than its factorization.

9739985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948002.

The product of its digits is 612360, while the sum is 50.

The square root of 9739985 is about 3120.8949037095. The cubic root of 9739985 is about 213.5597625699.

Subtracting from 9739985 its reverse (5899379), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 9739985 in words is "nine million, seven hundred thirty-nine thousand, nine hundred eighty-five".