3959591 has 2 divisors, whose sum is σ = 3959592. Its totient is φ = 3959590.

The previous prime is 3959587. The next prime is 3959651. The reversal of 3959591 is 1959593.

It is a weak prime.

It is an emirp because it is prime and its reverse (1959593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3959591 - 2² = 3959587 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3959531) 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, 1979795 + 1979796.

It is an arithmetic number, because the mean of its divisors is an integer number (1979796).

Almost surely, 2^3959591 is an apocalyptic number.

3959591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959591 is an equidigital number, since it uses as much as digits as its factorization.

3959591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54675, while the sum is 41.

The square root of 3959591 is about 1989.8721064430. The cubic root of 3959591 is about 158.2037509173.

The spelling of 3959591 in words is "three million, nine hundred fifty-nine thousand, five hundred ninety-one".