438729 has 16 divisors (see below), whose sum is σ = 633600. Its totient is φ = 269136.

The previous prime is 438721. The next prime is 438733. The reversal of 438729 is 927834.

438729 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 438729 - 2³ = 438721 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 438729.

It is not an unprimeable number, because it can be changed into a prime (438721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2362 + ... + 2540.

It is an arithmetic number, because the mean of its divisors is an integer number (39600).

2⁴³⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

438729 is a deficient number, since it is larger than the sum of its proper divisors (194871).

438729 is a wasteful number, since it uses less digits than its factorization.

438729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244.

The product of its digits is 12096, while the sum is 33.

The square root of 438729 is about 662.3662129064. The cubic root of 438729 is about 75.9857429397.

The spelling of 438729 in words is "four hundred thirty-eight thousand, seven hundred twenty-nine".