9721435822 has 16 divisors (see below), whose sum is σ = 17645631840. Its totient is φ = 3921251328.

The previous prime is 9721435813. The next prime is 9721435859. The reversal of 9721435822 is 2285341279.

9721435822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 20422947 + ... + 20423422.

It is an arithmetic number, because the mean of its divisors is an integer number (1102851990).

Almost surely, 2^9721435822 is an apocalyptic number.

9721435822 is a deficient number, since it is larger than the sum of its proper divisors (7924196018).

9721435822 is a wasteful number, since it uses less digits than its factorization.

9721435822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40846395.

The product of its digits is 241920, while the sum is 43.

The square root of 9721435822 is about 98597.3418607216. The cubic root of 9721435822 is about 2134.2410611757.

The spelling of 9721435822 in words is "nine billion, seven hundred twenty-one million, four hundred thirty-five thousand, eight hundred twenty-two".