9985759 has 10 divisors (see below), whose sum is σ = 11652160. Its totient is φ = 8557164.

The previous prime is 9985753. The next prime is 9985763. The reversal of 9985759 is 9575899.

It is not a de Polignac number, because 9985759 - 2⁷ = 9985631 is a prime.

It is a Duffinian number.

9985759 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985753) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 322 + ... + 4480.

It is an arithmetic number, because the mean of its divisors is an integer number (1165216).

Almost surely, 2^9985759 is an apocalyptic number.

9985759 is a deficient number, since it is larger than the sum of its proper divisors (1666401).

9985759 is an frugal number, since it uses more digits than its factorization.

9985759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187 (or 4166 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 52.

The square root of 9985759 is about 3160.0251581277. The cubic root of 9985759 is about 215.3411494020.

It can be divided in two parts, 99 and 85759, that added together give a palindrome (85858).

The spelling of 9985759 in words is "nine million, nine hundred eighty-five thousand, seven hundred fifty-nine".