9807729040 has 20 divisors (see below), whose sum is σ = 22802970204. Its totient is φ = 3923091584.

The previous prime is 9807729017. The next prime is 9807729077. The reversal of 9807729040 is 409277089.

It can be written as a sum of positive squares in 2 ways, for example, as 4147875216 + 5659853824 = 64404^2 + 75232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 61298227 + ... + 61298386.

Almost surely, 2^9807729040 is an apocalyptic number.

It is an amenable number.

9807729040 is an abundant number, since it is smaller than the sum of its proper divisors (12995241164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9807729040 is a wasteful number, since it uses less digits than its factorization.

9807729040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122596626 (or 122596620 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 9807729040 is about 99033.9792192559. The cubic root of 9807729040 is about 2140.5373966998.

The spelling of 9807729040 in words is "nine billion, eight hundred seven million, seven hundred twenty-nine thousand, forty".