438469 has 4 divisors (see below), whose sum is σ = 446796. Its totient is φ = 430144.

The previous prime is 438467. The next prime is 438479. The reversal of 438469 is 964834.

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 324900 + 113569 = 570^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 438469 - 2¹ = 438467 is a prime.

It is a super-2 number, since 2×438469² = 384510127922, which contains 22 as substring.

It is a Duffinian number.

438469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438467) 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, 4084 + ... + 4189.

It is an arithmetic number, because the mean of its divisors is an integer number (111699).

2⁴³⁸⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

438469 is a deficient number, since it is larger than the sum of its proper divisors (8327).

438469 is an equidigital number, since it uses as much as digits as its factorization.

438469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8326.

The product of its digits is 20736, while the sum is 34.

The square root of 438469 is about 662.1699177704. The cubic root of 438469 is about 75.9707297257.

The spelling of 438469 in words is "four hundred thirty-eight thousand, four hundred sixty-nine".