438966 has 32 divisors (see below), whose sum is σ = 1065600. Its totient is φ = 132840.

The previous prime is 438961. The next prime is 438967. The reversal of 438966 is 669834.

438966 is nontrivially palindromic in base 16.

It is a super-2 number, since 2×438966² = 385382298312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 438966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438961) by changing a digit.

438966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 225 + ... + 963.

It is an arithmetic number, because the mean of its divisors is an integer number (33300).

2⁴³⁸⁹⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532800).

438966 is an abundant number, since it is smaller than the sum of its proper divisors (626634).

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

438966 is a wasteful number, since it uses less digits than its factorization.

438966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 755 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 438966 is about 662.5450928050. The cubic root of 438966 is about 75.9994228950. Note that the first 3 decimals are identical.

It can be divided in two parts, 43 and 8966, that added together give a palindrome (9009).

The spelling of 438966 in words is "four hundred thirty-eight thousand, nine hundred sixty-six".