27933977 has 2 divisors, whose sum is σ = 27933978. Its totient is φ = 27933976.

The previous prime is 27933973. The next prime is 27933979. The reversal of 27933977 is 77933972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22477081 + 5456896 = 4741^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 27933977 - 2² = 27933973 is a prime.

Together with 27933979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27933973) 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, 13966988 + 13966989.

It is an arithmetic number, because the mean of its divisors is an integer number (13966989).

Almost surely, 2^27933977 is an apocalyptic number.

It is an amenable number.

27933977 is a deficient number, since it is larger than the sum of its proper divisors (1).

27933977 is an equidigital number, since it uses as much as digits as its factorization.

27933977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 500094, while the sum is 47.

The square root of 27933977 is about 5285.2603530952. The cubic root of 27933977 is about 303.4200370697.

The spelling of 27933977 in words is "twenty-seven million, nine hundred thirty-three thousand, nine hundred seventy-seven".