9983825 has 6 divisors (see below), whose sum is σ = 12379974. Its totient is φ = 7987040.

The previous prime is 9983791. The next prime is 9983837. The reversal of 9983825 is 5283899.

It can be written as a sum of positive squares in 3 ways, for example, as 355216 + 9628609 = 596^2 + 3103^2 .

It is not a de Polignac number, because 9983825 - 2¹⁰ = 9982801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199652 + ... + 199701.

It is an arithmetic number, because the mean of its divisors is an integer number (2063329).

Almost surely, 2^9983825 is an apocalyptic number.

It is an amenable number.

9983825 is a deficient number, since it is larger than the sum of its proper divisors (2396149).

9983825 is a wasteful number, since it uses less digits than its factorization.

9983825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399363 (or 399358 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 9983825 is about 3159.7191330876. The cubic root of 9983825 is about 215.3272463802.

The spelling of 9983825 in words is "nine million, nine hundred eighty-three thousand, eight hundred twenty-five".