39013 has 4 divisors (see below), whose sum is σ = 42028. Its totient is φ = 36000.

The previous prime is 38993. The next prime is 39019. The reversal of 39013 is 31093.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12769 + 26244 = 113^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 39013 - 2⁹ = 38501 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39019) 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 3 ways as a sum of consecutive naturals, for example, 1488 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (10507).

2³⁹⁰¹³ is an apocalyptic number.

It is an amenable number.

39013 is a deficient number, since it is larger than the sum of its proper divisors (3015).

39013 is a wasteful number, since it uses less digits than its factorization.

39013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 39013 is about 197.5170878684. The cubic root of 39013 is about 33.9158820243.

The spelling of 39013 in words is "thirty-nine thousand, thirteen".