8709172 has 12 divisors (see below), whose sum is σ = 15528996. Its totient is φ = 4272320.

The previous prime is 8709149. The next prime is 8709187. The reversal of 8709172 is 2719078.

It can be written as a sum of positive squares in 2 ways, for example, as 4999696 + 3709476 = 2236^2 + 1926^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20329 + ... + 20752.

It is an arithmetic number, because the mean of its divisors is an integer number (1294083).

Almost surely, 2^8709172 is an apocalyptic number.

It is an amenable number.

8709172 is a deficient number, since it is larger than the sum of its proper divisors (6819824).

8709172 is a wasteful number, since it uses less digits than its factorization.

8709172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41138 (or 41136 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 8709172 is about 2951.1306307922. The cubic root of 8709172 is about 205.7432626546.

The spelling of 8709172 in words is "eight million, seven hundred nine thousand, one hundred seventy-two".