869797 has 8 divisors (see below), whose sum is σ = 912600. Its totient is φ = 827904.

The previous prime is 869779. The next prime is 869807. The reversal of 869797 is 797968.

869797 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 4 ways, for example, as 12321 + 857476 = 111^2 + 926^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869797 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 (869707) 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, 2413 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (114075).

2⁸⁶⁹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

869797 is a deficient number, since it is larger than the sum of its proper divisors (42803).

869797 is a wasteful number, since it uses less digits than its factorization.

869797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its digits is 190512, while the sum is 46.

The square root of 869797 is about 932.6290795381. The cubic root of 869797 is about 95.4566015361.

The spelling of 869797 in words is "eight hundred sixty-nine thousand, seven hundred ninety-seven".