3959959 has 2 divisors, whose sum is σ = 3959960. Its totient is φ = 3959958.

The previous prime is 3959957. The next prime is 3959981. The reversal of 3959959 is 9599593.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3959959 - 2¹ = 3959957 is a prime.

Together with 3959957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3959953) 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, 1979979 + 1979980.

It is an arithmetic number, because the mean of its divisors is an integer number (1979980).

Almost surely, 2^3959959 is an apocalyptic number.

3959959 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959959 is an equidigital number, since it uses as much as digits as its factorization.

3959959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 492075, while the sum is 49.

The square root of 3959959 is about 1989.9645725490. The cubic root of 3959959 is about 158.2086518592.

The spelling of 3959959 in words is "three million, nine hundred fifty-nine thousand, nine hundred fifty-nine".