438811 has 4 divisors (see below), whose sum is σ = 442152. Its totient is φ = 435472.

The previous prime is 438793. The next prime is 438827. The reversal of 438811 is 118834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118834 = 2 ⋅59417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438811 is a prime.

It is a Duffinian number.

438811 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (438211) 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, 1465 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (110538).

2⁴³⁸⁸¹¹ is an apocalyptic number.

438811 is a deficient number, since it is larger than the sum of its proper divisors (3341).

438811 is a wasteful number, since it uses less digits than its factorization.

438811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340.

The product of its digits is 768, while the sum is 25.

The square root of 438811 is about 662.4281093070. The cubic root of 438811 is about 75.9904766460.

It can be divided in two parts, 43 and 8811, that multiplied together give a palindrome (378873).

The spelling of 438811 in words is "four hundred thirty-eight thousand, eight hundred eleven".