438442 has 8 divisors (see below), whose sum is σ = 660996. Its totient is φ = 218112.

The previous prime is 438439. The next prime is 438443. The reversal of 438442 is 244834.

It can be written as a sum of positive squares in 2 ways, for example, as 436921 + 1521 = 661^2 + 39^2 .

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

It is not an unprimeable number, because it can be changed into a prime (438443) 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, 88 + ... + 940.

2⁴³⁸⁴⁴² is an apocalyptic number.

438442 is a deficient number, since it is larger than the sum of its proper divisors (222554).

438442 is a wasteful number, since it uses less digits than its factorization.

438442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 3072, while the sum is 25.

The square root of 438442 is about 662.1495299402. The cubic root of 438442 is about 75.9691703210.

The spelling of 438442 in words is "four hundred thirty-eight thousand, four hundred forty-two".