438939 has 10 divisors (see below), whose sum is σ = 655820. Its totient is φ = 292572.

The previous prime is 438937. The next prime is 438941. The reversal of 438939 is 939834.

It is an interprime number because it is at equal distance from previous prime (438937) and next prime (438941).

It is not a de Polignac number, because 438939 - 2¹ = 438937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438937) 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 9 ways as a sum of consecutive naturals, for example, 2629 + ... + 2790.

It is an arithmetic number, because the mean of its divisors is an integer number (65582).

2⁴³⁸⁹³⁹ is an apocalyptic number.

438939 is a deficient number, since it is larger than the sum of its proper divisors (216881).

438939 is an equidigital number, since it uses as much as digits as its factorization.

438939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431 (or 5422 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 438939 is about 662.5247165201. The cubic root of 438939 is about 75.9978646676.

It can be divided in two parts, 4389 and 39, that multiplied together give a palindrome (171171).

The spelling of 438939 in words is "four hundred thirty-eight thousand, nine hundred thirty-nine".