16039 has 4 divisors (see below), whose sum is σ = 16456. Its totient is φ = 15624.

The previous prime is 16033. The next prime is 16057. The reversal of 16039 is 93061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93061 = 29 ⋅3209.

It is a cyclic number.

It is not a de Polignac number, because 16039 - 2⁵ = 16007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16033) 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, 144 + ... + 229.

It is an arithmetic number, because the mean of its divisors is an integer number (4114).

2¹⁶⁰³⁹ is an apocalyptic number.

16039 is a deficient number, since it is larger than the sum of its proper divisors (417).

16039 is an equidigital number, since it uses as much as digits as its factorization.

16039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 16039 is about 126.6451736151. The cubic root of 16039 is about 25.2188781026.

The spelling of 16039 in words is "sixteen thousand, thirty-nine".