27144947 has 2 divisors, whose sum is σ = 27144948. Its totient is φ = 27144946.

The previous prime is 27144941. The next prime is 27144959. The reversal of 27144947 is 74944172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27144947 - 2¹⁰ = 27143923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27144947.

It is not a weakly prime, because it can be changed into another prime (27144941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572473 + 13572474.

It is an arithmetic number, because the mean of its divisors is an integer number (13572474).

Almost surely, 2^27144947 is an apocalyptic number.

27144947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27144947 is an equidigital number, since it uses as much as digits as its factorization.

27144947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 27144947 is about 5210.0812853544. The cubic root of 27144947 is about 300.5358829357.

The spelling of 27144947 in words is "twenty-seven million, one hundred forty-four thousand, nine hundred forty-seven".