27963931 has 2 divisors, whose sum is σ = 27963932. Its totient is φ = 27963930.

The previous prime is 27963911. The next prime is 27963937. The reversal of 27963931 is 13936972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27963931 - 2¹¹ = 27961883 is a prime.

It is a super-2 number, since 2×27963931² = 1563962873945522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27963937) 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, 13981965 + 13981966.

It is an arithmetic number, because the mean of its divisors is an integer number (13981966).

Almost surely, 2^27963931 is an apocalyptic number.

27963931 is a deficient number, since it is larger than the sum of its proper divisors (1).

27963931 is an equidigital number, since it uses as much as digits as its factorization.

27963931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 27963931 is about 5288.0933236848. The cubic root of 27963931 is about 303.5284521979.

The spelling of 27963931 in words is "twenty-seven million, nine hundred sixty-three thousand, nine hundred thirty-one".