438065 has 4 divisors (see below), whose sum is σ = 525684. Its totient is φ = 350448.

The previous prime is 438049. The next prime is 438091. The reversal of 438065 is 560834.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 142129 = 544^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 438065 - 2⁴ = 438049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 438065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43802 + ... + 43811.

It is an arithmetic number, because the mean of its divisors is an integer number (131421).

2⁴³⁸⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

438065 is a deficient number, since it is larger than the sum of its proper divisors (87619).

438065 is an equidigital number, since it uses as much as digits as its factorization.

438065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87618.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 438065 is about 661.8647898174. The cubic root of 438065 is about 75.9473897206.

Adding to 438065 its reverse (560834), we get a palindrome (998899).

The spelling of 438065 in words is "four hundred thirty-eight thousand, sixty-five".