3947533 has 2 divisors, whose sum is σ = 3947534. Its totient is φ = 3947532.

The previous prime is 3947507. The next prime is 3947549. The reversal of 3947533 is 3357493.

3947533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2550409 + 1397124 = 1597^2 + 1182^2 .

It is an emirp because it is prime and its reverse (3357493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3947533 - 2⁵ = 3947501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3947233) 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, 1973766 + 1973767.

It is an arithmetic number, because the mean of its divisors is an integer number (1973767).

Almost surely, 2^3947533 is an apocalyptic number.

It is an amenable number.

3947533 is a deficient number, since it is larger than the sum of its proper divisors (1).

3947533 is an equidigital number, since it uses as much as digits as its factorization.

3947533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 34.

The square root of 3947533 is about 1986.8399532927. The cubic root of 3947533 is about 158.0429968971.

The spelling of 3947533 in words is "three million, nine hundred forty-seven thousand, five hundred thirty-three".