27932977 has 2 divisors, whose sum is σ = 27932978. Its totient is φ = 27932976.

The previous prime is 27932963. The next prime is 27932987. The reversal of 27932977 is 77923972.

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., 27920656 + 12321 = 5284^2 + 111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27932977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27932987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13966488 + 13966489.

It is an arithmetic number, because the mean of its divisors is an integer number (13966489).

Almost surely, 2^27932977 is an apocalyptic number.

It is an amenable number.

27932977 is a deficient number, since it is larger than the sum of its proper divisors (1).

27932977 is an equidigital number, since it uses as much as digits as its factorization.

27932977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 46.

The square root of 27932977 is about 5285.1657495295. The cubic root of 27932977 is about 303.4164163457.

The spelling of 27932977 in words is "twenty-seven million, nine hundred thirty-two thousand, nine hundred seventy-seven".