438764 has 12 divisors (see below), whose sum is σ = 772800. Its totient is φ = 217968.

The previous prime is 438761. The next prime is 438769. The reversal of 438764 is 467834.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 438764.

It is not an unprimeable number, because it can be changed into a prime (438761) 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 3 ways as a sum of consecutive naturals, for example, 677 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (64400).

2⁴³⁸⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

438764 is a deficient number, since it is larger than the sum of its proper divisors (334036).

438764 is a wasteful number, since it uses less digits than its factorization.

438764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 710 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 438764 is about 662.3926328093. The cubic root of 438764 is about 75.9877634962.

The spelling of 438764 in words is "four hundred thirty-eight thousand, seven hundred sixty-four".