8722791 has 48 divisors (see below), whose sum is σ = 16144128. Its totient is φ = 4406400.

The previous prime is 8722789. The next prime is 8722799. The reversal of 8722791 is 1972278.

It is not a de Polignac number, because 8722791 - 2¹ = 8722789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722799) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 28260 + ... + 28566.

It is an arithmetic number, because the mean of its divisors is an integer number (336336).

Almost surely, 2^8722791 is an apocalyptic number.

8722791 is a deficient number, since it is larger than the sum of its proper divisors (7421337).

8722791 is a wasteful number, since it uses less digits than its factorization.

8722791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 369 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 8722791 is about 2953.4371501693. The cubic root of 8722791 is about 205.8504507320.

It can be divided in two parts, 872 and 2791, that added together give a palindrome (3663).

The spelling of 8722791 in words is "eight million, seven hundred twenty-two thousand, seven hundred ninety-one".