869470717 has 4 divisors (see below), whose sum is σ = 869547420. Its totient is φ = 869394016.

The previous prime is 869470699. The next prime is 869470747. The reversal of 869470717 is 717074968.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 479566201 + 389904516 = 21899^2 + 19746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869470717 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869470747) 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, 17608 + ... + 45265.

It is an arithmetic number, because the mean of its divisors is an integer number (217386855).

Almost surely, 2^869470717 is an apocalyptic number.

It is an amenable number.

869470717 is a deficient number, since it is larger than the sum of its proper divisors (76703).

869470717 is a wasteful number, since it uses less digits than its factorization.

869470717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76702.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 869470717 is about 29486.7888553501. The cubic root of 869470717 is about 954.4466397613.

The spelling of 869470717 in words is "eight hundred sixty-nine million, four hundred seventy thousand, seven hundred seventeen".