4089556 has 6 divisors (see below), whose sum is σ = 7156730. Its totient is φ = 2044776.

The previous prime is 4089521. The next prime is 4089559. The reversal of 4089556 is 6559804.

It can be written as a sum of positive squares in only one way, i.e., 2944656 + 1144900 = 1716^2 + 1070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4089559) 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, 511191 + ... + 511198.

Almost surely, 2^4089556 is an apocalyptic number.

It is an amenable number.

4089556 is a deficient number, since it is larger than the sum of its proper divisors (3067174).

4089556 is a wasteful number, since it uses less digits than its factorization.

4089556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022393 (or 1022391 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 4089556 is about 2022.2650667012. The cubic root of 4089556 is about 159.9160497099.

The spelling of 4089556 in words is "four million, eighty-nine thousand, five hundred fifty-six".