27447923 has 2 divisors, whose sum is σ = 27447924. Its totient is φ = 27447922.

The previous prime is 27447919. The next prime is 27447929. The reversal of 27447923 is 32974472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27447923 - 2² = 27447919 is a prime.

It is not a weakly prime, because it can be changed into another prime (27447929) 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 as a sum of consecutive naturals, namely, 13723961 + 13723962.

It is an arithmetic number, because the mean of its divisors is an integer number (13723962).

Almost surely, 2^27447923 is an apocalyptic number.

27447923 is a deficient number, since it is larger than the sum of its proper divisors (1).

27447923 is an equidigital number, since it uses as much as digits as its factorization.

27447923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 27447923 is about 5239.0765407656. The cubic root of 27447923 is about 301.6498837191.

The spelling of 27447923 in words is "twenty-seven million, four hundred forty-seven thousand, nine hundred twenty-three".