3861589 has 2 divisors, whose sum is σ = 3861590. Its totient is φ = 3861588.

The previous prime is 3861587. The next prime is 3861593. The reversal of 3861589 is 9851683.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2079364 + 1782225 = 1442^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 3861589 - 2¹ = 3861587 is a prime.

Together with 3861587, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

3861589 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3861581) 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, 1930794 + 1930795.

It is an arithmetic number, because the mean of its divisors is an integer number (1930795).

Almost surely, 2^3861589 is an apocalyptic number.

It is an amenable number.

3861589 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861589 is an equidigital number, since it uses as much as digits as its factorization.

3861589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The square root of 3861589 is about 1965.0926186824. The cubic root of 3861589 is about 156.8876229373.

The spelling of 3861589 in words is "three million, eight hundred sixty-one thousand, five hundred eighty-nine".