3891589 has 8 divisors (see below), whose sum is σ = 4437720. Its totient is φ = 3380736.

The previous prime is 3891571. The next prime is 3891593. The reversal of 3891589 is 9851983.

3891589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 801025 + 3090564 = 895^2 + 1758^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3891589 - 2⁹ = 3891077 is a prime.

It is a Duffinian number.

3891589 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8584 + ... + 9025.

It is an arithmetic number, because the mean of its divisors is an integer number (554715).

Almost surely, 2^3891589 is an apocalyptic number.

It is an amenable number.

3891589 is a deficient number, since it is larger than the sum of its proper divisors (546131).

3891589 is a wasteful number, since it uses less digits than its factorization.

3891589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17639.

The product of its digits is 77760, while the sum is 43.

The square root of 3891589 is about 1972.7110786935. The cubic root of 3891589 is about 157.2928527275.

The spelling of 3891589 in words is "three million, eight hundred ninety-one thousand, five hundred eighty-nine".