869841 has 12 divisors (see below), whose sum is σ = 1436032. Its totient is φ = 497016.

The previous prime is 869819. The next prime is 869849. The reversal of 869841 is 148968.

It is a happy number.

869841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 869841 - 2⁵ = 869809 is a prime.

It is a Duffinian number.

869841 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 869796 and 869805.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869841.

It is not an unprimeable number, because it can be changed into a prime (869849) 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, 6841 + ... + 6966.

2⁸⁶⁹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

869841 is a deficient number, since it is larger than the sum of its proper divisors (566191).

869841 is a wasteful number, since it uses less digits than its factorization.

869841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13820 (or 13817 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 869841 is about 932.6526684677. The cubic root of 869841 is about 95.4582111146.

The spelling of 869841 in words is "eight hundred sixty-nine thousand, eight hundred forty-one".