869540 has 24 divisors (see below), whose sum is σ = 2087232. Its totient is φ = 298080.

The previous prime is 869521. The next prime is 869543. The reversal of 869540 is 45968.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 869497 and 869506.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869540.

It is not an unprimeable number, because it can be changed into a prime (869543) 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, 2966 + ... + 3245.

It is an arithmetic number, because the mean of its divisors is an integer number (86968).

2⁸⁶⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

869540 is an abundant number, since it is smaller than the sum of its proper divisors (1217692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869540 is a wasteful number, since it uses less digits than its factorization.

869540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227 (or 6225 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 869540 is about 932.4912868226. The cubic root of 869540 is about 95.4471990498.

The spelling of 869540 in words is "eight hundred sixty-nine thousand, five hundred forty".