8872649731 has 32 divisors (see below), whose sum is σ = 10398870720. Its totient is φ = 7493068800.

The previous prime is 8872649729. The next prime is 8872649743. The reversal of 8872649731 is 1379462788.

8872649731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8872649731 - 2¹ = 8872649729 is a prime.

It is a super-2 number, since 2×8872649731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8872649711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 950121 + ... + 959413.

It is an arithmetic number, because the mean of its divisors is an integer number (324964710).

Almost surely, 2^8872649731 is an apocalyptic number.

8872649731 is a deficient number, since it is larger than the sum of its proper divisors (1526220989).

8872649731 is a wasteful number, since it uses less digits than its factorization.

8872649731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447.

The product of its digits is 4064256, while the sum is 55.

The square root of 8872649731 is about 94194.7436484648. The cubic root of 8872649731 is about 2070.2260973444.

The spelling of 8872649731 in words is "eight billion, eight hundred seventy-two million, six hundred forty-nine thousand, seven hundred thirty-one".