9861940307 has 4 divisors (see below), whose sum is σ = 10091287800. Its totient is φ = 9632592816.

The previous prime is 9861940259. The next prime is 9861940321. The reversal of 9861940307 is 7030491689.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9861940307 - 2²⁰ = 9860891731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9861940337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114673682 + ... + 114673767.

It is an arithmetic number, because the mean of its divisors is an integer number (2522821950).

Almost surely, 2^9861940307 is an apocalyptic number.

9861940307 is a deficient number, since it is larger than the sum of its proper divisors (229347493).

9861940307 is a wasteful number, since it uses less digits than its factorization.

9861940307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229347492.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 9861940307 is about 99307.3023850714. The cubic root of 9861940307 is about 2144.4740231356.

The spelling of 9861940307 in words is "nine billion, eight hundred sixty-one million, nine hundred forty thousand, three hundred seven".