438365 has 8 divisors (see below), whose sum is σ = 533688. Its totient is φ = 345600.

The previous prime is 438341. The next prime is 438377. The reversal of 438365 is 563834.

It can be written as a sum of positive squares in 4 ways, for example, as 121 + 438244 = 11^2 + 662^2 .

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

It is not a de Polignac number, because 438365 - 2⁶ = 438301 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 438365.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236 + ... + 965.

It is an arithmetic number, because the mean of its divisors is an integer number (66711).

2⁴³⁸³⁶⁵ is an apocalyptic number.

It is an amenable number.

438365 is a deficient number, since it is larger than the sum of its proper divisors (95323).

438365 is a wasteful number, since it uses less digits than its factorization.

438365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279.

The product of its digits is 8640, while the sum is 29.

The square root of 438365 is about 662.0913834207. The cubic root of 438365 is about 75.9647227783.

The spelling of 438365 in words is "four hundred thirty-eight thousand, three hundred sixty-five".