27389129 has 2 divisors, whose sum is σ = 27389130. Its totient is φ = 27389128.

The previous prime is 27389123. The next prime is 27389143. The reversal of 27389129 is 92198372.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 67600 = 5227^2 + 260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27389129 is a prime.

It is not a weakly prime, because it can be changed into another prime (27389123) 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, 13694564 + 13694565.

It is an arithmetic number, because the mean of its divisors is an integer number (13694565).

Almost surely, 2^27389129 is an apocalyptic number.

It is an amenable number.

27389129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27389129 is an equidigital number, since it uses as much as digits as its factorization.

27389129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 27389129 is about 5233.4624294056. The cubic root of 27389129 is about 301.4343497252.

The spelling of 27389129 in words is "twenty-seven million, three hundred eighty-nine thousand, one hundred twenty-nine".