3965443 has 2 divisors, whose sum is σ = 3965444. Its totient is φ = 3965442.

The previous prime is 3965441. The next prime is 3965447. The reversal of 3965443 is 3445693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3965443 - 2¹ = 3965441 is a prime.

Together with 3965441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3965399 and 3965408.

It is not a weakly prime, because it can be changed into another prime (3965441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982721 + 1982722.

It is an arithmetic number, because the mean of its divisors is an integer number (1982722).

Almost surely, 2^3965443 is an apocalyptic number.

3965443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3965443 is an equidigital number, since it uses as much as digits as its factorization.

3965443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

The square root of 3965443 is about 1991.3420098014. The cubic root of 3965443 is about 158.2816505986.

The spelling of 3965443 in words is "three million, nine hundred sixty-five thousand, four hundred forty-three".