3973009 has 2 divisors, whose sum is σ = 3973010. Its totient is φ = 3973008.

The previous prime is 3973007. The next prime is 3973027. The reversal of 3973009 is 9003793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3168400 + 804609 = 1780^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 3973009 - 2¹ = 3973007 is a prime.

Together with 3973007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3973007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986504 + 1986505.

It is an arithmetic number, because the mean of its divisors is an integer number (1986505).

Almost surely, 2^3973009 is an apocalyptic number.

It is an amenable number.

3973009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3973009 is an equidigital number, since it uses as much as digits as its factorization.

3973009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 3973009 is about 1993.2408283998. The cubic root of 3973009 is about 158.3822529049.

The spelling of 3973009 in words is "three million, nine hundred seventy-three thousand, nine".