39673 has 4 divisors (see below), whose sum is σ = 40180. Its totient is φ = 39168.

The previous prime is 39671. The next prime is 39679. The reversal of 39673 is 37693.

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 28224 + 11449 = 168^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 39673 - 2¹ = 39671 is a prime.

It is a Duffinian number.

39673 is a lucky number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (39671) 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, 108 + ... + 301.

It is an arithmetic number, because the mean of its divisors is an integer number (10045).

2³⁹⁶⁷³ is an apocalyptic number.

It is an amenable number.

39673 is a deficient number, since it is larger than the sum of its proper divisors (507).

39673 is an equidigital number, since it uses as much as digits as its factorization.

39673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506.

The product of its digits is 3402, while the sum is 28.

The square root of 39673 is about 199.1808223700. The cubic root of 39673 is about 34.1060701319.

The spelling of 39673 in words is "thirty-nine thousand, six hundred seventy-three".