4081589 has 4 divisors (see below), whose sum is σ = 4105356. Its totient is φ = 4057824.

The previous prime is 4081579. The next prime is 4081601. The reversal of 4081589 is 9851804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2002225 + 2079364 = 1415^2 + 1442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4081589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11624 + ... + 11969.

It is an arithmetic number, because the mean of its divisors is an integer number (1026339).

Almost surely, 2^4081589 is an apocalyptic number.

It is an amenable number.

4081589 is a deficient number, since it is larger than the sum of its proper divisors (23767).

4081589 is a wasteful number, since it uses less digits than its factorization.

4081589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23766.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 4081589 is about 2020.2942854941. The cubic root of 4081589 is about 159.8121362773.

It can be divided in two parts, 40815 and 89, that added together give a palindrome (40904).

The spelling of 4081589 in words is "four million, eighty-one thousand, five hundred eighty-nine".