879218417 has 32 divisors (see below), whose sum is σ = 1125120000. Its totient is φ = 681080400.

The previous prime is 879218411. The next prime is 879218429. The reversal of 879218417 is 714812978.

It is a happy number.

It is not a de Polignac number, because 879218417 - 2¹⁰ = 879217393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879218411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 750242 + ... + 751412.

It is an arithmetic number, because the mean of its divisors is an integer number (35160000).

Almost surely, 2^879218417 is an apocalyptic number.

It is an amenable number.

879218417 is a deficient number, since it is larger than the sum of its proper divisors (245901583).

879218417 is a wasteful number, since it uses less digits than its factorization.

879218417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1388 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 879218417 is about 29651.6174432357. The cubic root of 879218417 is about 958.0001834168. Note that the first 3 decimals are identical.

It can be divided in two parts, 8 and 79218417, that multiplied together give a palindrome (633747336).

The spelling of 879218417 in words is "eight hundred seventy-nine million, two hundred eighteen thousand, four hundred seventeen".