3973309 has 2 divisors, whose sum is σ = 3973310. Its totient is φ = 3973308.

The previous prime is 3973303. The next prime is 3973331. The reversal of 3973309 is 9033793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3250809 + 722500 = 1803^2 + 850^2 .

It is an emirp because it is prime and its reverse (9033793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3973309 - 2²¹ = 1876157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3973303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986654 + 1986655.

It is an arithmetic number, because the mean of its divisors is an integer number (1986655).

Almost surely, 2^3973309 is an apocalyptic number.

It is an amenable number.

3973309 is a deficient number, since it is larger than the sum of its proper divisors (1).

3973309 is an equidigital number, since it uses as much as digits as its factorization.

3973309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15309, while the sum is 34.

The square root of 3973309 is about 1993.3160813077. The cubic root of 3973309 is about 158.3862392605.

The spelling of 3973309 in words is "three million, nine hundred seventy-three thousand, three hundred nine".