27280091 has 2 divisors, whose sum is σ = 27280092. Its totient is φ = 27280090.

The previous prime is 27280079. The next prime is 27280111. The reversal of 27280091 is 19008272.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27280091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (27280391) 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, 13640045 + 13640046.

It is an arithmetic number, because the mean of its divisors is an integer number (13640046).

Almost surely, 2^27280091 is an apocalyptic number.

27280091 is a deficient number, since it is larger than the sum of its proper divisors (1).

27280091 is an equidigital number, since it uses as much as digits as its factorization.

27280091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 27280091 is about 5223.0346542982. The cubic root of 27280091 is about 301.0338074557.

The spelling of 27280091 in words is "twenty-seven million, two hundred eighty thousand, ninety-one".