438481 has 4 divisors (see below), whose sum is σ = 464292. Its totient is φ = 412672.

The previous prime is 438479. The next prime is 438499. The reversal of 438481 is 184834.

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 172225 + 266256 = 415^2 + 516^2 .

It is a cyclic number.

It is not a de Polignac number, because 438481 - 2¹ = 438479 is a prime.

It is a super-2 number, since 2×438481² = 384531174722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12880 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (116073).

2⁴³⁸⁴⁸¹ is an apocalyptic number.

It is an amenable number.

438481 is a deficient number, since it is larger than the sum of its proper divisors (25811).

438481 is a wasteful number, since it uses less digits than its factorization.

438481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25810.

The product of its digits is 3072, while the sum is 28.

The square root of 438481 is about 662.1789788267. The cubic root of 438481 is about 75.9714227739.

It can be divided in two parts, 4384 and 81, that added together give a triangular number (4465 = T₉₄).

The spelling of 438481 in words is "four hundred thirty-eight thousand, four hundred eighty-one".