39438 has 24 divisors (see below), whose sum is σ = 97968. Its totient is φ = 11232.

The previous prime is 39419. The next prime is 39439. The reversal of 39438 is 83493.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31 + ... + 282.

It is an arithmetic number, because the mean of its divisors is an integer number (4082).

2³⁹⁴³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48984).

39438 is an abundant number, since it is smaller than the sum of its proper divisors (58530).

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

39438 is a wasteful number, since it uses less digits than its factorization.

39438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 325 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 39438 is about 198.5900299612. The cubic root of 39438 is about 34.0385951571.

The spelling of 39438 in words is "thirty-nine thousand, four hundred thirty-eight".