869897 has 12 divisors (see below), whose sum is σ = 1038996. Its totient is φ = 725760.

The previous prime is 869893. The next prime is 869899. The reversal of 869897 is 798968.

It can be written as a sum of positive squares in 2 ways, for example, as 67081 + 802816 = 259^2 + 896^2 .

It is not a de Polignac number, because 869897 - 2² = 869893 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869897.

It is not an unprimeable number, because it can be changed into a prime (869893) 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, 1793 + ... + 2225.

It is an arithmetic number, because the mean of its divisors is an integer number (86583).

2⁸⁶⁹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

869897 is a deficient number, since it is larger than the sum of its proper divisors (169099).

869897 is a wasteful number, since it uses less digits than its factorization.

869897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 481 counting only the distinct ones).

The product of its digits is 217728, while the sum is 47.

The square root of 869897 is about 932.6826898790. The cubic root of 869897 is about 95.4602595906.

The spelling of 869897 in words is "eight hundred sixty-nine thousand, eight hundred ninety-seven".