27869147 has 2 divisors, whose sum is σ = 27869148. Its totient is φ = 27869146.

The previous prime is 27869111. The next prime is 27869173. The reversal of 27869147 is 74196872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27869147 - 2¹⁸ = 27607003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27869098 and 27869107.

It is not a weakly prime, because it can be changed into another prime (27869747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13934573 + 13934574.

It is an arithmetic number, because the mean of its divisors is an integer number (13934574).

Almost surely, 2^27869147 is an apocalyptic number.

27869147 is a deficient number, since it is larger than the sum of its proper divisors (1).

27869147 is an equidigital number, since it uses as much as digits as its factorization.

27869147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 27869147 is about 5279.1236962208. The cubic root of 27869147 is about 303.1851265147.

The spelling of 27869147 in words is "twenty-seven million, eight hundred sixty-nine thousand, one hundred forty-seven".