438681 has 16 divisors (see below), whose sum is σ = 622080. Its totient is φ = 274560.

The previous prime is 438671. The next prime is 438701. The reversal of 438681 is 186834.

It is a happy number.

It is not a de Polignac number, because 438681 - 2⁹ = 438169 is a prime.

It is a super-2 number, since 2×438681² = 384882039522, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (438601) 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, 4885 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2⁴³⁸⁶⁸¹ is an apocalyptic number.

It is an amenable number.

438681 is a deficient number, since it is larger than the sum of its proper divisors (183399).

438681 is a wasteful number, since it uses less digits than its factorization.

438681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176.

The product of its digits is 4608, while the sum is 30.

The square root of 438681 is about 662.3299781831. The cubic root of 438681 is about 75.9829717159.

The spelling of 438681 in words is "four hundred thirty-eight thousand, six hundred eighty-one".