4085489 has 2 divisors, whose sum is σ = 4085490. Its totient is φ = 4085488.

The previous prime is 4085453. The next prime is 4085507. The reversal of 4085489 is 9845804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3211264 + 874225 = 1792^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 4085489 - 2¹² = 4081393 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4085089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2042744 + 2042745.

It is an arithmetic number, because the mean of its divisors is an integer number (2042745).

Almost surely, 2^4085489 is an apocalyptic number.

It is an amenable number.

4085489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4085489 is an equidigital number, since it uses as much as digits as its factorization.

4085489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 4085489 is about 2021.2592609559. The cubic root of 4085489 is about 159.8630207836.

The spelling of 4085489 in words is "four million, eighty-five thousand, four hundred eighty-nine".