27671129 has 2 divisors, whose sum is σ = 27671130. Its totient is φ = 27671128.

The previous prime is 27671107. The next prime is 27671131. The reversal of 27671129 is 92117672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 10465225 = 4148^2 + 3235^2 .

It is a cyclic number.

It is not a de Polignac number, because 27671129 - 2⁸ = 27670873 is a prime.

Together with 27671131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27671029) 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, 13835564 + 13835565.

It is an arithmetic number, because the mean of its divisors is an integer number (13835565).

Almost surely, 2^27671129 is an apocalyptic number.

It is an amenable number.

27671129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27671129 is an equidigital number, since it uses as much as digits as its factorization.

27671129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 27671129 is about 5260.3354455776. The cubic root of 27671129 is about 302.4653476687.

The spelling of 27671129 in words is "twenty-seven million, six hundred seventy-one thousand, one hundred twenty-nine".