27946189 has 2 divisors, whose sum is σ = 27946190. Its totient is φ = 27946188.

The previous prime is 27946129. The next prime is 27946199. The reversal of 27946189 is 98164972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27910089 + 36100 = 5283^2 + 190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27946189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27946109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13973094 + 13973095.

It is an arithmetic number, because the mean of its divisors is an integer number (13973095).

Almost surely, 2^27946189 is an apocalyptic number.

It is an amenable number.

27946189 is a deficient number, since it is larger than the sum of its proper divisors (1).

27946189 is an equidigital number, since it uses as much as digits as its factorization.

27946189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 27946189 is about 5286.4155152617. The cubic root of 27946189 is about 303.4642463810.

The spelling of 27946189 in words is "twenty-seven million, nine hundred forty-six thousand, one hundred eighty-nine".