438704 has 20 divisors (see below), whose sum is σ = 971664. Its totient is φ = 187968.

The previous prime is 438701. The next prime is 438707. The reversal of 438704 is 407834.

It is an interprime number because it is at equal distance from previous prime (438701) and next prime (438707).

It is a super-2 number, since 2×438704² = 384922399232, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438701) 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, 1847 + ... + 2070.

2⁴³⁸⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

438704 is an abundant number, since it is smaller than the sum of its proper divisors (532960).

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

438704 is a wasteful number, since it uses less digits than its factorization.

438704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932 (or 3926 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 438704 is about 662.3473409020. The cubic root of 438704 is about 75.9842996192.

The spelling of 438704 in words is "four hundred thirty-eight thousand, seven hundred four".