27144889 has 2 divisors, whose sum is σ = 27144890. Its totient is φ = 27144888.

The previous prime is 27144877. The next prime is 27144907. The reversal of 27144889 is 98844172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17640000 + 9504889 = 4200^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 27144889 - 2⁵ = 27144857 is a prime.

It is not a weakly prime, because it can be changed into another prime (27144839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572444 + 13572445.

It is an arithmetic number, because the mean of its divisors is an integer number (13572445).

Almost surely, 2^27144889 is an apocalyptic number.

It is an amenable number.

27144889 is a deficient number, since it is larger than the sum of its proper divisors (1).

27144889 is an equidigital number, since it uses as much as digits as its factorization.

27144889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The square root of 27144889 is about 5210.0757192194. The cubic root of 27144889 is about 300.5356688861.

The spelling of 27144889 in words is "twenty-seven million, one hundred forty-four thousand, eight hundred eighty-nine".