869804688989 has 8 divisors (see below), whose sum is σ = 891288071520. Its totient is φ = 848378368656.

The previous prime is 869804688947. The next prime is 869804689003. The reversal of 869804688989 is 989886408968.

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

It is a cyclic number.

It is not a de Polignac number, because 869804688989 - 2²⁰ = 869803640413 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 (869804688689) 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, 14234687 + ... + 14295660.

It is an arithmetic number, because the mean of its divisors is an integer number (111411008940).

Almost surely, 2^869804688989 is an apocalyptic number.

It is an amenable number.

869804688989 is a deficient number, since it is larger than the sum of its proper divisors (21483382531).

869804688989 is a wasteful number, since it uses less digits than its factorization.

869804688989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28531099.

The product of its (nonzero) digits is 3439853568, while the sum is 83.

The spelling of 869804688989 in words is "eight hundred sixty-nine billion, eight hundred four million, six hundred eighty-eight thousand, nine hundred eighty-nine".