27973471 has 2 divisors, whose sum is σ = 27973472. Its totient is φ = 27973470.

The previous prime is 27973459. The next prime is 27973499. The reversal of 27973471 is 17437972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27973471 - 2¹¹ = 27971423 is a prime.

It is a super-3 number, since 3×27973471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27973411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13986735 + 13986736.

It is an arithmetic number, because the mean of its divisors is an integer number (13986736).

Almost surely, 2^27973471 is an apocalyptic number.

27973471 is a deficient number, since it is larger than the sum of its proper divisors (1).

27973471 is an equidigital number, since it uses as much as digits as its factorization.

27973471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 40.

The square root of 27973471 is about 5288.9952732064. The cubic root of 27973471 is about 303.5629648970.

The spelling of 27973471 in words is "twenty-seven million, nine hundred seventy-three thousand, four hundred seventy-one".