79217 has 4 divisors (see below), whose sum is σ = 81396. Its totient is φ = 77040.

The previous prime is 79201. The next prime is 79229. The reversal of 79217 is 71297.

79217 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71297 = 83 ⋅859.

It can be written as a sum of positive squares in 2 ways, for example, as 73441 + 5776 = 271^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 79217 - 2⁴ = 79201 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 79217.

It is not an unprimeable number, because it can be changed into a prime (79817) 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, 1034 + ... + 1107.

It is an arithmetic number, because the mean of its divisors is an integer number (20349).

2⁷⁹²¹⁷ is an apocalyptic number.

It is an amenable number.

79217 is a deficient number, since it is larger than the sum of its proper divisors (2179).

79217 is a wasteful number, since it uses less digits than its factorization.

79217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178.

The product of its digits is 882, while the sum is 26.

The square root of 79217 is about 281.4551474036. The cubic root of 79217 is about 42.9476557949.

The spelling of 79217 in words is "seventy-nine thousand, two hundred seventeen".