3918589 has 2 divisors, whose sum is σ = 3918590. Its totient is φ = 3918588.

The previous prime is 3918587. The next prime is 3918613. The reversal of 3918589 is 9858193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3392964 + 525625 = 1842^2 + 725^2 .

It is an emirp because it is prime and its reverse (9858193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3918589 - 2¹ = 3918587 is a prime.

Together with 3918587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3918583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959294 + 1959295.

It is an arithmetic number, because the mean of its divisors is an integer number (1959295).

Almost surely, 2^3918589 is an apocalyptic number.

It is an amenable number.

3918589 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918589 is an equidigital number, since it uses as much as digits as its factorization.

3918589 is an evil number, because the sum of its binary digits is even.

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

The square root of 3918589 is about 1979.5426239412. The cubic root of 3918589 is about 157.6557827089.

The spelling of 3918589 in words is "three million, nine hundred eighteen thousand, five hundred eighty-nine".