438942 has 24 divisors (see below), whose sum is σ = 1021896. Its totient is φ = 125328.

The previous prime is 438941. The next prime is 438953. The reversal of 438942 is 249834.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438941) 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 11 ways as a sum of consecutive naturals, for example, 453 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (42579).

2⁴³⁸⁹⁴² is an apocalyptic number.

438942 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

438942 is an abundant number, since it is smaller than the sum of its proper divisors (582954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438942 is a wasteful number, since it uses less digits than its factorization.

438942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1505 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 438942 is about 662.5269805827. The cubic root of 438942 is about 75.9980378071.

The spelling of 438942 in words is "four hundred thirty-eight thousand, nine hundred forty-two".