8722872149 has 4 divisors (see below), whose sum is σ = 8812798764. Its totient is φ = 8632945536.

The previous prime is 8722872143. The next prime is 8722872161. The reversal of 8722872149 is 9412782278.

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 7092166225 + 1630705924 = 84215^2 + 40382^2 .

It is a cyclic number.

It is not a de Polignac number, because 8722872149 - 2²⁴ = 8706094933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8722872097 and 8722872106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722872143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44963162 + ... + 44963355.

It is an arithmetic number, because the mean of its divisors is an integer number (2203199691).

Almost surely, 2^8722872149 is an apocalyptic number.

It is an amenable number.

8722872149 is a deficient number, since it is larger than the sum of its proper divisors (89926615).

8722872149 is an equidigital number, since it uses as much as digits as its factorization.

8722872149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89926614.

The product of its digits is 903168, while the sum is 50.

The square root of 8722872149 is about 93396.3176415430. The cubic root of 8722872149 is about 2058.5108907912.

The spelling of 8722872149 in words is "eight billion, seven hundred twenty-two million, eight hundred seventy-two thousand, one hundred forty-nine".