3981343 has 2 divisors, whose sum is σ = 3981344. Its totient is φ = 3981342.

The previous prime is 3981331. The next prime is 3981389. The reversal of 3981343 is 3431893.

3981343 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 3981343 - 2⁹ = 3980831 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3981643) 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, 1990671 + 1990672.

It is an arithmetic number, because the mean of its divisors is an integer number (1990672).

Almost surely, 2^3981343 is an apocalyptic number.

3981343 is a deficient number, since it is larger than the sum of its proper divisors (1).

3981343 is an equidigital number, since it uses as much as digits as its factorization.

3981343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 3981343 is about 1995.3302984719. The cubic root of 3981343 is about 158.4929193067.

The spelling of 3981343 in words is "three million, nine hundred eighty-one thousand, three hundred forty-three".