39671 has 2 divisors, whose sum is σ = 39672. Its totient is φ = 39670.

The previous prime is 39667. The next prime is 39679. The reversal of 39671 is 17693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39671 - 2² = 39667 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39671.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 39671.

It is not a weakly prime, because it can be changed into another prime (39679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19835 + 19836.

It is an arithmetic number, because the mean of its divisors is an integer number (19836).

2³⁹⁶⁷¹ is an apocalyptic number.

39671 is a deficient number, since it is larger than the sum of its proper divisors (1).

39671 is an equidigital number, since it uses as much as digits as its factorization.

39671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 39671 is about 199.1758017431. The cubic root of 39671 is about 34.1054970026.

The spelling of 39671 in words is "thirty-nine thousand, six hundred seventy-one".