27328999 has 2 divisors, whose sum is σ = 27329000. Its totient is φ = 27328998.

The previous prime is 27328997. The next prime is 27329021. The reversal of 27328999 is 99982372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27328999 - 2¹ = 27328997 is a prime.

Together with 27328997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27328997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13664499 + 13664500.

It is an arithmetic number, because the mean of its divisors is an integer number (13664500).

Almost surely, 2^27328999 is an apocalyptic number.

27328999 is a deficient number, since it is larger than the sum of its proper divisors (1).

27328999 is an equidigital number, since it uses as much as digits as its factorization.

27328999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 27328999 is about 5227.7145101851. The cubic root of 27328999 is about 301.2135987880.

The spelling of 27328999 in words is "twenty-seven million, three hundred twenty-eight thousand, nine hundred ninety-nine".