27859393 has 2 divisors, whose sum is σ = 27859394. Its totient is φ = 27859392.

The previous prime is 27859331. The next prime is 27859411. The reversal of 27859393 is 39395872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25573249 + 2286144 = 5057^2 + 1512^2 .

It is a cyclic number.

It is not a de Polignac number, because 27859393 - 2⁹ = 27858881 is a prime.

It is a super-2 number, since 2×27859393² = 1552291556656898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27859303) 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, 13929696 + 13929697.

It is an arithmetic number, because the mean of its divisors is an integer number (13929697).

Almost surely, 2^27859393 is an apocalyptic number.

It is an amenable number.

27859393 is a deficient number, since it is larger than the sum of its proper divisors (1).

27859393 is an equidigital number, since it uses as much as digits as its factorization.

27859393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 27859393 is about 5278.1997878064. The cubic root of 27859393 is about 303.1497515198.

The spelling of 27859393 in words is "twenty-seven million, eight hundred fifty-nine thousand, three hundred ninety-three".