869788917 has 12 divisors (see below), whose sum is σ = 1296889984. Its totient is φ = 561153960.

The previous prime is 869788903. The next prime is 869788919. The reversal of 869788917 is 719887968.

It is not a de Polignac number, because 869788917 - 2⁶ = 869788853 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 (869788919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1558483 + ... + 1559040.

Almost surely, 2^869788917 is an apocalyptic number.

It is an amenable number.

869788917 is a deficient number, since it is larger than the sum of its proper divisors (427101067).

869788917 is a wasteful number, since it uses less digits than its factorization.

869788917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117560 (or 3117557 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The square root of 869788917 is about 29492.1839984766. The cubic root of 869788917 is about 954.5630584335.

The spelling of 869788917 in words is "eight hundred sixty-nine million, seven hundred eighty-eight thousand, nine hundred seventeen".