9983436805 has 4 divisors (see below), whose sum is σ = 11980124172. Its totient is φ = 7986749440.

The previous prime is 9983436797. The next prime is 9983436811. The reversal of 9983436805 is 5086343899.

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 5877062244 + 4106374561 = 76662^2 + 64081^2 .

It is not a de Polignac number, because 9983436805 - 2³ = 9983436797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998343676 + ... + 998343685.

It is an arithmetic number, because the mean of its divisors is an integer number (2995031043).

Almost surely, 2^9983436805 is an apocalyptic number.

It is an amenable number.

9983436805 is a deficient number, since it is larger than the sum of its proper divisors (1996687367).

9983436805 is a wasteful number, since it uses less digits than its factorization.

9983436805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996687366.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The square root of 9983436805 is about 99917.1497041424. The cubic root of 9983436805 is about 2153.2445553125.

The spelling of 9983436805 in words is "nine billion, nine hundred eighty-three million, four hundred thirty-six thousand, eight hundred five".