9985959 has 12 divisors (see below), whose sum is σ = 14466816. Its totient is φ = 6637632.

The previous prime is 9985909. The next prime is 9985961. The reversal of 9985959 is 9595899.

It is not a de Polignac number, because 9985959 - 2⁹ = 9985447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999 + ... + 4895.

It is an arithmetic number, because the mean of its divisors is an integer number (1205568).

Almost surely, 2^9985959 is an apocalyptic number.

9985959 is a deficient number, since it is larger than the sum of its proper divisors (4480857).

9985959 is a wasteful number, since it uses less digits than its factorization.

9985959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286 (or 3283 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 54.

The square root of 9985959 is about 3160.0568032869. The cubic root of 9985959 is about 215.3425870474.

The spelling of 9985959 in words is "nine million, nine hundred eighty-five thousand, nine hundred fifty-nine".