3997933 has 2 divisors, whose sum is σ = 3997934. Its totient is φ = 3997932.

The previous prime is 3997927. The next prime is 3997963. The reversal of 3997933 is 3397993.

It is a happy number.

3997933 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., 3992004 + 5929 = 1998^2 + 77^2 .

It is an emirp because it is prime and its reverse (3397993) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3997933 is a prime.

3997933 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3997933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3997963) 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, 1998966 + 1998967.

It is an arithmetic number, because the mean of its divisors is an integer number (1998967).

Almost surely, 2^3997933 is an apocalyptic number.

It is an amenable number.

3997933 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997933 is an equidigital number, since it uses as much as digits as its factorization.

3997933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137781, while the sum is 43.

The square root of 3997933 is about 1999.4831832251. The cubic root of 3997933 is about 158.7127575025.

The spelling of 3997933 in words is "three million, nine hundred ninety-seven thousand, nine hundred thirty-three".