27159947 has 2 divisors, whose sum is σ = 27159948. Its totient is φ = 27159946.

The previous prime is 27159943. The next prime is 27159953. The reversal of 27159947 is 74995172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27159947 - 2² = 27159943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27159898 and 27159907.

It is not a weakly prime, because it can be changed into another prime (27159943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13579973 + 13579974.

It is an arithmetic number, because the mean of its divisors is an integer number (13579974).

Almost surely, 2^27159947 is an apocalyptic number.

27159947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27159947 is an equidigital number, since it uses as much as digits as its factorization.

27159947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 27159947 is about 5211.5206034324. The cubic root of 27159947 is about 300.5912303531.

The spelling of 27159947 in words is "twenty-seven million, one hundred fifty-nine thousand, nine hundred forty-seven".