869309617 has 6 divisors (see below), whose sum is σ = 955522274. Its totient is φ = 790281360.

The previous prime is 869309591. The next prime is 869309627. The reversal of 869309617 is 716903968.

869309617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 517972081 + 351337536 = 22759^2 + 18744^2 .

It is not a de Polignac number, because 869309617 - 2¹⁹ = 868785329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869309627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3592068 + ... + 3592309.

Almost surely, 2^869309617 is an apocalyptic number.

It is an amenable number.

869309617 is a deficient number, since it is larger than the sum of its proper divisors (86212657).

869309617 is a wasteful number, since it uses less digits than its factorization.

869309617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7184399 (or 7184388 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 869309617 is about 29484.0569969602. The cubic root of 869309617 is about 954.3876878617.

The spelling of 869309617 in words is "eight hundred sixty-nine million, three hundred nine thousand, six hundred seventeen".