8717279 has 4 divisors (see below), whose sum is σ = 8725200. Its totient is φ = 8709360.

The previous prime is 8717273. The next prime is 8717287. The reversal of 8717279 is 9727178.

8717279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9727178 = 2 ⋅4863589.

It is a cyclic number.

It is not a de Polignac number, because 8717279 - 2⁴ = 8717263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8717273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979 + ... + 4620.

It is an arithmetic number, because the mean of its divisors is an integer number (2181300).

Almost surely, 2^8717279 is an apocalyptic number.

8717279 is a deficient number, since it is larger than the sum of its proper divisors (7921).

8717279 is a wasteful number, since it uses less digits than its factorization.

8717279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7920.

The product of its digits is 49392, while the sum is 41.

The square root of 8717279 is about 2952.5038526647. The cubic root of 8717279 is about 205.8070820913.

The spelling of 8717279 in words is "eight million, seven hundred seventeen thousand, two hundred seventy-nine".