11857589 has 2 divisors, whose sum is σ = 11857590. Its totient is φ = 11857588.

The previous prime is 11857543. The next prime is 11857591. The reversal of 11857589 is 98575811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 195364 = 3415^2 + 442^2 .

It is an emirp because it is prime and its reverse (98575811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11857589 - 2⁸ = 11857333 is a prime.

Together with 11857591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11857519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5928794 + 5928795.

It is an arithmetic number, because the mean of its divisors is an integer number (5928795).

Almost surely, 2^11857589 is an apocalyptic number.

It is an amenable number.

11857589 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857589 is an equidigital number, since it uses as much as digits as its factorization.

11857589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 44.

The square root of 11857589 is about 3443.4850079534. The cubic root of 11857589 is about 228.0335759007.

The spelling of 11857589 in words is "eleven million, eight hundred fifty-seven thousand, five hundred eighty-nine".