27040609 has 4 divisors (see below), whose sum is σ = 27057604. Its totient is φ = 27023616.

The previous prime is 27040579. The next prime is 27040631. The reversal of 27040609 is 90604072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18792225 + 8248384 = 4335^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 27040609 - 2⁵ = 27040577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27040309) 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 in 3 ways as a sum of consecutive naturals, for example, 5832 + ... + 9385.

It is an arithmetic number, because the mean of its divisors is an integer number (6764401).

Almost surely, 2^27040609 is an apocalyptic number.

It is an amenable number.

27040609 is a deficient number, since it is larger than the sum of its proper divisors (16995).

27040609 is a wasteful number, since it uses less digits than its factorization.

27040609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16994.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 27040609 is about 5200.0585573626. The cubic root of 27040609 is about 300.1503283624.

The spelling of 27040609 in words is "twenty-seven million, forty thousand, six hundred nine".