879217 has 6 divisors (see below), whose sum is σ = 898982. Its totient is φ = 859872.

The previous prime is 879199. The next prime is 879227. The reversal of 879217 is 712978.

It can be written as a sum of positive squares in 3 ways, for example, as 62001 + 817216 = 249^2 + 904^2 .

It is not a de Polignac number, because 879217 - 2⁷ = 879089 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 (879227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2653 + ... + 2965.

2⁸⁷⁹²¹⁷ is an apocalyptic number.

It is an amenable number.

879217 is a deficient number, since it is larger than the sum of its proper divisors (19765).

879217 is an equidigital number, since it uses as much as digits as its factorization.

879217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 366 counting only the distinct ones).

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

The square root of 879217 is about 937.6657186866. The cubic root of 879217 is about 95.7999668760.

The spelling of 879217 in words is "eight hundred seventy-nine thousand, two hundred seventeen".