8722157943 has 16 divisors (see below), whose sum is σ = 12125306880. Its totient is φ = 5570048736.

The previous prime is 8722157909. The next prime is 8722157947. The reversal of 8722157943 is 3497512278.

It is a happy number.

8722157943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8722157943 - 2¹⁴ = 8722141559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8722157892 and 8722157901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722157947) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 383655 + ... + 405752.

It is an arithmetic number, because the mean of its divisors is an integer number (757831680).

Almost surely, 2^8722157943 is an apocalyptic number.

8722157943 is a deficient number, since it is larger than the sum of its proper divisors (3403148937).

8722157943 is a wasteful number, since it uses less digits than its factorization.

8722157943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789566.

The product of its digits is 846720, while the sum is 48.

The square root of 8722157943 is about 93392.4940399388. The cubic root of 8722157943 is about 2058.4547074251.

The spelling of 8722157943 in words is "eight billion, seven hundred twenty-two million, one hundred fifty-seven thousand, nine hundred forty-three".