27989359 has 2 divisors, whose sum is σ = 27989360. Its totient is φ = 27989358.

The previous prime is 27989333. The next prime is 27989363. The reversal of 27989359 is 95398972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27989359 - 2⁷ = 27989231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27989369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13994679 + 13994680.

It is an arithmetic number, because the mean of its divisors is an integer number (13994680).

Almost surely, 2^27989359 is an apocalyptic number.

27989359 is a deficient number, since it is larger than the sum of its proper divisors (1).

27989359 is an equidigital number, since it uses as much as digits as its factorization.

27989359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 52.

The square root of 27989359 is about 5290.4970465921. The cubic root of 27989359 is about 303.6204252383.

The spelling of 27989359 in words is "twenty-seven million, nine hundred eighty-nine thousand, three hundred fifty-nine".