27329987 has 2 divisors, whose sum is σ = 27329988. Its totient is φ = 27329986.

The previous prime is 27329947. The next prime is 27329989. The reversal of 27329987 is 78992372.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27329987 is a prime.

Together with 27329989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27329989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13664993 + 13664994.

It is an arithmetic number, because the mean of its divisors is an integer number (13664994).

Almost surely, 2^27329987 is an apocalyptic number.

27329987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27329987 is an equidigital number, since it uses as much as digits as its factorization.

27329987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 27329987 is about 5227.8090056925. The cubic root of 27329987 is about 301.2172285764.

The spelling of 27329987 in words is "twenty-seven million, three hundred twenty-nine thousand, nine hundred eighty-seven".