27469009 has 4 divisors (see below), whose sum is σ = 28053504. Its totient is φ = 26884516.

The previous prime is 27468989. The next prime is 27469019. The reversal of 27469009 is 90096472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27469009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27469019) 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 in 3 ways as a sum of consecutive naturals, for example, 292177 + ... + 292270.

It is an arithmetic number, because the mean of its divisors is an integer number (7013376).

Almost surely, 2^27469009 is an apocalyptic number.

It is an amenable number.

27469009 is a deficient number, since it is larger than the sum of its proper divisors (584495).

27469009 is an equidigital number, since it uses as much as digits as its factorization.

27469009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584494.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 27469009 is about 5241.0885319750. The cubic root of 27469009 is about 301.7271082796.

The spelling of 27469009 in words is "twenty-seven million, four hundred sixty-nine thousand, nine".