8709172773 has 16 divisors (see below), whose sum is σ = 13291844736. Its totient is φ = 4968898560.

The previous prime is 8709172763. The next prime is 8709172793. The reversal of 8709172773 is 3772719078.

It is not a de Polignac number, because 8709172773 - 2⁴ = 8709172757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8709172753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310036 + ... + 336957.

It is an arithmetic number, because the mean of its divisors is an integer number (830740296).

Almost surely, 2^8709172773 is an apocalyptic number.

It is an amenable number.

8709172773 is a deficient number, since it is larger than the sum of its proper divisors (4582671963).

8709172773 is a wasteful number, since it uses less digits than its factorization.

8709172773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647644.

The product of its (nonzero) digits is 1037232, while the sum is 51.

The square root of 8709172773 is about 93322.9488014604. The cubic root of 8709172773 is about 2057.4326874164.

The spelling of 8709172773 in words is "eight billion, seven hundred nine million, one hundred seventy-two thousand, seven hundred seventy-three".