438865 has 8 divisors (see below), whose sum is σ = 601920. Its totient is φ = 300912.

The previous prime is 438853. The next prime is 438869. The reversal of 438865 is 568834.

438865 = 81² + 82² + ... + 122².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438865 - 2⁵ = 438833 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 438865.

It is not an unprimeable number, because it can be changed into a prime (438869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6235 + ... + 6304.

It is an arithmetic number, because the mean of its divisors is an integer number (75240).

2⁴³⁸⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

438865 is a deficient number, since it is larger than the sum of its proper divisors (163055).

438865 is a wasteful number, since it uses less digits than its factorization.

438865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12551.

The product of its digits is 23040, while the sum is 34.

The square root of 438865 is about 662.4688671930. The cubic root of 438865 is about 75.9935936428.

The spelling of 438865 in words is "four hundred thirty-eight thousand, eight hundred sixty-five".