3939671 has 2 divisors, whose sum is σ = 3939672. Its totient is φ = 3939670.

The previous prime is 3939641. The next prime is 3939673. The reversal of 3939671 is 1769393.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3939671 - 2¹⁴ = 3923287 is a prime.

It is a Sophie Germain prime.

Together with 3939673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3939673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969835 + 1969836.

It is an arithmetic number, because the mean of its divisors is an integer number (1969836).

Almost surely, 2^3939671 is an apocalyptic number.

3939671 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939671 is an equidigital number, since it uses as much as digits as its factorization.

3939671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 3939671 is about 1984.8604484951. The cubic root of 3939671 is about 157.9380064434.

The spelling of 3939671 in words is "three million, nine hundred thirty-nine thousand, six hundred seventy-one".