27073009 has 2 divisors, whose sum is σ = 27073010. Its totient is φ = 27073008.

The previous prime is 27072989. The next prime is 27073021. The reversal of 27073009 is 90037072.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23184225 + 3888784 = 4815^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 27073009 - 2¹¹ = 27070961 is a prime.

It is not a weakly prime, because it can be changed into another prime (27073049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13536504 + 13536505.

It is an arithmetic number, because the mean of its divisors is an integer number (13536505).

Almost surely, 2^27073009 is an apocalyptic number.

It is an amenable number.

27073009 is a deficient number, since it is larger than the sum of its proper divisors (1).

27073009 is an equidigital number, since it uses as much as digits as its factorization.

27073009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 27073009 is about 5203.1729742533. The cubic root of 27073009 is about 300.2701603420.

The spelling of 27073009 in words is "twenty-seven million, seventy-three thousand, nine".