438831 has 8 divisors (see below), whose sum is σ = 650160. Its totient is φ = 292536.

The previous prime is 438829. The next prime is 438833. The reversal of 438831 is 138834.

It is an interprime number because it is at equal distance from previous prime (438829) and next prime (438833).

It is not a de Polignac number, because 438831 - 2¹ = 438829 is a prime.

It is a super-2 number, since 2×438831² = 385145293122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16253 = 438831 / (4 + 3 + 8 + 8 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 438795 and 438804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438833) by changing a digit.

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, 8100 + ... + 8153.

It is an arithmetic number, because the mean of its divisors is an integer number (81270).

2⁴³⁸⁸³¹ is an apocalyptic number.

438831 is a deficient number, since it is larger than the sum of its proper divisors (211329).

438831 is a wasteful number, since it uses less digits than its factorization.

438831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16262 (or 16256 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 438831 is about 662.4432051127. The cubic root of 438831 is about 75.9916311191.

The spelling of 438831 in words is "four hundred thirty-eight thousand, eight hundred thirty-one".