438085 has 8 divisors (see below), whose sum is σ = 538776. Its totient is φ = 341760.

The previous prime is 438049. The next prime is 438091. The reversal of 438085 is 580834.

It can be written as a sum of positive squares in 4 ways, for example, as 25921 + 412164 = 161^2 + 642^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-438085 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 864 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (67347).

2⁴³⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

438085 is a deficient number, since it is larger than the sum of its proper divisors (100691).

438085 is a wasteful number, since it uses less digits than its factorization.

438085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 438085 is about 661.8798984710. The cubic root of 438085 is about 75.9485455039.

It can be divided in two parts, 4380 and 85, that added together give a triangular number (4465 = T₉₄).

The spelling of 438085 in words is "four hundred thirty-eight thousand, eighty-five".