27110989 has 2 divisors, whose sum is σ = 27110990. Its totient is φ = 27110988.

The previous prime is 27110987. The next prime is 27110999. The reversal of 27110989 is 98901172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 8749764 = 4285^2 + 2958^2 .

It is a cyclic number.

It is not a de Polignac number, because 27110989 - 2¹ = 27110987 is a prime.

Together with 27110987, 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 (27110981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13555494 + 13555495.

It is an arithmetic number, because the mean of its divisors is an integer number (13555495).

Almost surely, 2^27110989 is an apocalyptic number.

It is an amenable number.

27110989 is a deficient number, since it is larger than the sum of its proper divisors (1).

27110989 is an equidigital number, since it uses as much as digits as its factorization.

27110989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 27110989 is about 5206.8213912136. The cubic root of 27110989 is about 300.4105083904.

The spelling of 27110989 in words is "twenty-seven million, one hundred ten thousand, nine hundred eighty-nine".