27969827 has 2 divisors, whose sum is σ = 27969828. Its totient is φ = 27969826.

The previous prime is 27969803. The next prime is 27969869. The reversal of 27969827 is 72896972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27969827 - 2¹⁰ = 27968803 is a prime.

It is a super-2 number, since 2×27969827² = 1564622444819858, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27960827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13984913 + 13984914.

It is an arithmetic number, because the mean of its divisors is an integer number (13984914).

Almost surely, 2^27969827 is an apocalyptic number.

27969827 is a deficient number, since it is larger than the sum of its proper divisors (1).

27969827 is an equidigital number, since it uses as much as digits as its factorization.

27969827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 27969827 is about 5288.6507731178. The cubic root of 27969827 is about 303.5497829852.

The spelling of 27969827 in words is "twenty-seven million, nine hundred sixty-nine thousand, eight hundred twenty-seven".