438634 has 32 divisors (see below), whose sum is σ = 846720. Its totient is φ = 165888.

The previous prime is 438631. The next prime is 438637. The reversal of 438634 is 436834.

438634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (438631) and next prime (438637).

It is not an unprimeable number, because it can be changed into a prime (438631) 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, 4474 + ... + 4570.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2⁴³⁸⁶³⁴ is an apocalyptic number.

438634 is a deficient number, since it is larger than the sum of its proper divisors (408086).

438634 is a wasteful number, since it uses less digits than its factorization.

438634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142.

The product of its digits is 6912, while the sum is 28.

The square root of 438634 is about 662.2944964289. The cubic root of 438634 is about 75.9802580301.

The spelling of 438634 in words is "four hundred thirty-eight thousand, six hundred thirty-four".