869744 has 20 divisors (see below), whose sum is σ = 1774440. Its totient is φ = 411840.

The previous prime is 869717. The next prime is 869747. The reversal of 869744 is 447968.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 869698 and 869707.

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 869744.

It is not an unprimeable number, because it can be changed into a prime (869747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127 + ... + 1734.

It is an arithmetic number, because the mean of its divisors is an integer number (88722).

2⁸⁶⁹⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

869744 is an abundant number, since it is smaller than the sum of its proper divisors (904696).

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

869744 is a wasteful number, since it uses less digits than its factorization.

869744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888 (or 2882 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 869744 is about 932.6006648078. The cubic root of 869744 is about 95.4546626536.

The spelling of 869744 in words is "eight hundred sixty-nine thousand, seven hundred forty-four".