11946589 has 2 divisors, whose sum is σ = 11946590. Its totient is φ = 11946588.

The previous prime is 11946587. The next prime is 11946629. The reversal of 11946589 is 98564911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11847364 + 99225 = 3442^2 + 315^2 .

It is an emirp because it is prime and its reverse (98564911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11946589 - 2¹ = 11946587 is a prime.

Together with 11946587, 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 (11946581) 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, 5973294 + 5973295.

It is an arithmetic number, because the mean of its divisors is an integer number (5973295).

Almost surely, 2^11946589 is an apocalyptic number.

It is an amenable number.

11946589 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946589 is an equidigital number, since it uses as much as digits as its factorization.

11946589 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11946589 is about 3456.3838039199. The cubic root of 11946589 is about 228.6026748020.

The spelling of 11946589 in words is "eleven million, nine hundred forty-six thousand, five hundred eighty-nine".