3765409 has 2 divisors, whose sum is σ = 3765410. Its totient is φ = 3765408.

The previous prime is 3765397. The next prime is 3765427. The reversal of 3765409 is 9045673.

3765409 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., 3459600 + 305809 = 1860^2 + 553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3765409 is a prime.

It is not a weakly prime, because it can be changed into another prime (3765709) 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, 1882704 + 1882705.

It is an arithmetic number, because the mean of its divisors is an integer number (1882705).

Almost surely, 2^3765409 is an apocalyptic number.

It is an amenable number.

3765409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3765409 is an equidigital number, since it uses as much as digits as its factorization.

3765409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 3765409 is about 1940.4661811019. The cubic root of 3765409 is about 155.5741315874.

The spelling of 3765409 in words is "three million, seven hundred sixty-five thousand, four hundred nine".