38139 has 4 divisors (see below), whose sum is σ = 50856. Its totient is φ = 25424.

The previous prime is 38119. The next prime is 38149. The reversal of 38139 is 93183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38139 - 2⁷ = 38011 is a prime.

It is a D-number.

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (38119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6354 + ... + 6359.

It is an arithmetic number, because the mean of its divisors is an integer number (12714).

2³⁸¹³⁹ is an apocalyptic number.

38139 is a deficient number, since it is larger than the sum of its proper divisors (12717).

38139 is a wasteful number, since it uses less digits than its factorization.

38139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12716.

The product of its digits is 648, while the sum is 24.

The square root of 38139 is about 195.2920889335. The cubic root of 38139 is about 33.6606966944.

The spelling of 38139 in words is "thirty-eight thousand, one hundred thirty-nine".