27945319 has 2 divisors, whose sum is σ = 27945320. Its totient is φ = 27945318.

The previous prime is 27945317. The next prime is 27945329. The reversal of 27945319 is 91354972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27945319 - 2¹ = 27945317 is a prime.

It is a super-2 number, since 2×27945319² = 1561881708023522, which contains 22 as substring.

Together with 27945317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27945317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13972659 + 13972660.

It is an arithmetic number, because the mean of its divisors is an integer number (13972660).

Almost surely, 2^27945319 is an apocalyptic number.

27945319 is a deficient number, since it is larger than the sum of its proper divisors (1).

27945319 is an equidigital number, since it uses as much as digits as its factorization.

27945319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 27945319 is about 5286.3332282405. Note that the first 3 decimals coincide. The cubic root of 27945319 is about 303.4610972738.

The spelling of 27945319 in words is "twenty-seven million, nine hundred forty-five thousand, three hundred nineteen".