9985903 has 2 divisors, whose sum is σ = 9985904. Its totient is φ = 9985902.

The previous prime is 9985901. The next prime is 9985909. The reversal of 9985903 is 3095899.

It is a weak prime.

It is an emirp because it is prime and its reverse (3095899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9985903 - 2¹ = 9985901 is a prime.

Together with 9985901, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9985903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9985901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992951 + 4992952.

It is an arithmetic number, because the mean of its divisors is an integer number (4992952).

Almost surely, 2^9985903 is an apocalyptic number.

9985903 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985903 is an equidigital number, since it uses as much as digits as its factorization.

9985903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 9985903 is about 3160.0479426743. The cubic root of 9985903 is about 215.3421845086.

The spelling of 9985903 in words is "nine million, nine hundred eighty-five thousand, nine hundred three".