27404129 has 2 divisors, whose sum is σ = 27404130. Its totient is φ = 27404128.

The previous prime is 27404081. The next prime is 27404131. The reversal of 27404129 is 92140472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 11404129 = 4000^2 + 3377^2 .

It is a cyclic number.

It is not a de Polignac number, because 27404129 - 2¹⁶ = 27338593 is a prime.

Together with 27404131, 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 (27404329) 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, 13702064 + 13702065.

It is an arithmetic number, because the mean of its divisors is an integer number (13702065).

Almost surely, 2^27404129 is an apocalyptic number.

It is an amenable number.

27404129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27404129 is an equidigital number, since it uses as much as digits as its factorization.

27404129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 27404129 is about 5234.8953189152. The cubic root of 27404129 is about 301.4893677834.

The spelling of 27404129 in words is "twenty-seven million, four hundred four thousand, one hundred twenty-nine".