39838 has 4 divisors (see below), whose sum is σ = 59760. Its totient is φ = 19918.

The previous prime is 39829. The next prime is 39839. The reversal of 39838 is 83893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83893 = 43 ⋅1951.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9958 + ... + 9961.

It is an arithmetic number, because the mean of its divisors is an integer number (14940).

2³⁹⁸³⁸ is an apocalyptic number.

39838 is a deficient number, since it is larger than the sum of its proper divisors (19922).

39838 is a wasteful number, since it uses less digits than its factorization.

39838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19921.

The product of its digits is 5184, while the sum is 31.

The square root of 39838 is about 199.5945891050. The cubic root of 39838 is about 34.1532871137.

The spelling of 39838 in words is "thirty-nine thousand, eight hundred thirty-eight".