867944 has 32 divisors (see below), whose sum is σ = 2030400. Its totient is φ = 337920.

The previous prime is 867943. The next prime is 867947. The reversal of 867944 is 449768.

It is a happy number.

It is a plaindrome in base 15.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 867898 and 867907.

It is not an unprimeable number, because it can be changed into a prime (867943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89 + ... + 1320.

It is an arithmetic number, because the mean of its divisors is an integer number (63450).

2⁸⁶⁷⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 867944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1015200).

867944 is an abundant number, since it is smaller than the sum of its proper divisors (1162456).

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

867944 is a wasteful number, since it uses less digits than its factorization.

867944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1429 counting only the distinct ones).

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

The square root of 867944 is about 931.6351217081. The cubic root of 867944 is about 95.3887669956.

The spelling of 867944 in words is "eight hundred sixty-seven thousand, nine hundred forty-four".