27471947 has 2 divisors, whose sum is σ = 27471948. Its totient is φ = 27471946.

The previous prime is 27471919. The next prime is 27471953. The reversal of 27471947 is 74917472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27471947 - 2¹² = 27467851 is a prime.

It is not a weakly prime, because it can be changed into another prime (27471907) 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, 13735973 + 13735974.

It is an arithmetic number, because the mean of its divisors is an integer number (13735974).

Almost surely, 2^27471947 is an apocalyptic number.

27471947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27471947 is an equidigital number, since it uses as much as digits as its factorization.

27471947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 41.

The square root of 27471947 is about 5241.3688097672. The cubic root of 27471947 is about 301.7378651613.

The spelling of 27471947 in words is "twenty-seven million, four hundred seventy-one thousand, nine hundred forty-seven".