9439768805 has 4 divisors (see below), whose sum is σ = 11327722572. Its totient is φ = 7551815040.

The previous prime is 9439768799. The next prime is 9439768817. The reversal of 9439768805 is 5088679349.

9439768805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2677338049 + 6762430756 = 51743^2 + 82234^2 .

It is not a de Polignac number, because 9439768805 - 2²⁶ = 9372659941 is a prime.

It is a super-2 number, since 2×9439768805² (a number of 21 digits) contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943976876 + ... + 943976885.

It is an arithmetic number, because the mean of its divisors is an integer number (2831930643).

Almost surely, 2^9439768805 is an apocalyptic number.

It is an amenable number.

9439768805 is a deficient number, since it is larger than the sum of its proper divisors (1887953767).

9439768805 is a wasteful number, since it uses less digits than its factorization.

9439768805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887953766.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The square root of 9439768805 is about 97158.4726362040. The cubic root of 9439768805 is about 2113.4263569304.

The spelling of 9439768805 in words is "nine billion, four hundred thirty-nine million, seven hundred sixty-eight thousand, eight hundred five".