3845489 has 2 divisors, whose sum is σ = 3845490. Its totient is φ = 3845488.

The previous prime is 3845477. The next prime is 3845497. The reversal of 3845489 is 9845483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2534464 + 1311025 = 1592^2 + 1145^2 .

It is an emirp because it is prime and its reverse (9845483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3845489 - 2¹² = 3841393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3845449) 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, 1922744 + 1922745.

It is an arithmetic number, because the mean of its divisors is an integer number (1922745).

Almost surely, 2^3845489 is an apocalyptic number.

It is an amenable number.

3845489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845489 is an equidigital number, since it uses as much as digits as its factorization.

3845489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 3845489 is about 1960.9918408805. The cubic root of 3845489 is about 156.6692836945.

It can be divided in two parts, 3845 and 489, that added together give a palindrome (4334).

The spelling of 3845489 in words is "three million, eight hundred forty-five thousand, four hundred eighty-nine".