868394517 has 8 divisors (see below), whose sum is σ = 1158928896. Its totient is φ = 578394912.

The previous prime is 868394431. The next prime is 868394521. The reversal of 868394517 is 715493868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 868394517 - 2²⁴ = 851617301 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 868394517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868394557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129888 + ... + 136409.

It is an arithmetic number, because the mean of its divisors is an integer number (144866112).

Almost surely, 2^868394517 is an apocalyptic number.

It is an amenable number.

868394517 is a deficient number, since it is larger than the sum of its proper divisors (290534379).

868394517 is a wasteful number, since it uses less digits than its factorization.

868394517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267387.

The product of its digits is 1451520, while the sum is 51.

The square root of 868394517 is about 29468.5343544602. The cubic root of 868394517 is about 954.0526837810.

The spelling of 868394517 in words is "eight hundred sixty-eight million, three hundred ninety-four thousand, five hundred seventeen".