3981959 has 2 divisors, whose sum is σ = 3981960. Its totient is φ = 3981958.

The previous prime is 3981953. The next prime is 3981973. The reversal of 3981959 is 9591893.

3981959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3981959 - 2¹² = 3977863 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3981953) 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, 1990979 + 1990980.

It is an arithmetic number, because the mean of its divisors is an integer number (1990980).

Almost surely, 2^3981959 is an apocalyptic number.

3981959 is a deficient number, since it is larger than the sum of its proper divisors (1).

3981959 is an equidigital number, since it uses as much as digits as its factorization.

3981959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 44.

The square root of 3981959 is about 1995.4846529102. The cubic root of 3981959 is about 158.5010929811.

The spelling of 3981959 in words is "three million, nine hundred eighty-one thousand, nine hundred fifty-nine".