27134309 has 2 divisors, whose sum is σ = 27134310. Its totient is φ = 27134308.

The previous prime is 27134291. The next prime is 27134311. The reversal of 27134309 is 90343172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22944100 + 4190209 = 4790^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 27134309 - 2¹⁶ = 27068773 is a prime.

It is a Sophie Germain prime.

Together with 27134311, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1690940 and since 27134309 and 1690940 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27134339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13567154 + 13567155.

It is an arithmetic number, because the mean of its divisors is an integer number (13567155).

Almost surely, 2^27134309 is an apocalyptic number.

It is an amenable number.

27134309 is a deficient number, since it is larger than the sum of its proper divisors (1).

27134309 is an equidigital number, since it uses as much as digits as its factorization.

27134309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 27134309 is about 5209.0602799353. The cubic root of 27134309 is about 300.4966181884.

The spelling of 27134309 in words is "twenty-seven million, one hundred thirty-four thousand, three hundred nine".