3845321 has 2 divisors, whose sum is σ = 3845322. Its totient is φ = 3845320.

The previous prime is 3845311. The next prime is 3845327. The reversal of 3845321 is 1235483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 3721 = 1960^2 + 61^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3845321 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3845327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1922660 + 1922661.

It is an arithmetic number, because the mean of its divisors is an integer number (1922661).

Almost surely, 2^3845321 is an apocalyptic number.

It is an amenable number.

3845321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845321 is an equidigital number, since it uses as much as digits as its factorization.

3845321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 3845321 is about 1960.9490049463. The cubic root of 3845321 is about 156.6670021622.

The spelling of 3845321 in words is "three million, eight hundred forty-five thousand, three hundred twenty-one".