3943481 has 2 divisors, whose sum is σ = 3943482. Its totient is φ = 3943480.

The previous prime is 3943451. The next prime is 3943517. The reversal of 3943481 is 1843493.

3943481 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 can be written as a sum of positive squares in only one way, i.e., 3936256 + 7225 = 1984^2 + 85^2 .

It is an emirp because it is prime and its reverse (1843493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3943481 - 2¹⁴ = 3927097 is a prime.

It is a super-2 number, since 2×3943481² = 31102084794722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3943451) 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, 1971740 + 1971741.

It is an arithmetic number, because the mean of its divisors is an integer number (1971741).

Almost surely, 2^3943481 is an apocalyptic number.

It is an amenable number.

3943481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3943481 is an equidigital number, since it uses as much as digits as its factorization.

3943481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 3943481 is about 1985.8199817708. The cubic root of 3943481 is about 157.9889032425.

The spelling of 3943481 in words is "three million, nine hundred forty-three thousand, four hundred eighty-one".