27389513 has 2 divisors, whose sum is σ = 27389514. Its totient is φ = 27389512.

The previous prime is 27389497. The next prime is 27389519. The reversal of 27389513 is 31598372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13935289 + 13454224 = 3733^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 27389513 - 2⁴ = 27389497 is a prime.

It is not a weakly prime, because it can be changed into another prime (27389519) 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, 13694756 + 13694757.

It is an arithmetic number, because the mean of its divisors is an integer number (13694757).

Almost surely, 2^27389513 is an apocalyptic number.

It is an amenable number.

27389513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27389513 is an equidigital number, since it uses as much as digits as its factorization.

27389513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 27389513 is about 5233.4991162701. The cubic root of 27389513 is about 301.4357584380.

The spelling of 27389513 in words is "twenty-seven million, three hundred eighty-nine thousand, five hundred thirteen".