27375889 has 2 divisors, whose sum is σ = 27375890. Its totient is φ = 27375888.

The previous prime is 27375877. The next prime is 27375917. The reversal of 27375889 is 98857372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 7795264 = 4425^2 + 2792^2 .

It is a cyclic number.

It is not a de Polignac number, because 27375889 - 2⁹ = 27375377 is a prime.

It is not a weakly prime, because it can be changed into another prime (27375989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13687944 + 13687945.

It is an arithmetic number, because the mean of its divisors is an integer number (13687945).

Almost surely, 2^27375889 is an apocalyptic number.

It is an amenable number.

27375889 is a deficient number, since it is larger than the sum of its proper divisors (1).

27375889 is an equidigital number, since it uses as much as digits as its factorization.

27375889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The square root of 27375889 is about 5232.1973395506. The cubic root of 27375889 is about 301.3857704264.

The spelling of 27375889 in words is "twenty-seven million, three hundred seventy-five thousand, eight hundred eighty-nine".