27959993 has 2 divisors, whose sum is σ = 27959994. Its totient is φ = 27959992.

The previous prime is 27959983. The next prime is 27960007. The reversal of 27959993 is 39995972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20187049 + 7772944 = 4493^2 + 2788^2 .

It is a cyclic number.

It is not a de Polignac number, because 27959993 - 2¹⁶ = 27894457 is a prime.

It is a super-2 number, since 2×27959993² = 1563522417120098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27959903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13979996 + 13979997.

It is an arithmetic number, because the mean of its divisors is an integer number (13979997).

Almost surely, 2^27959993 is an apocalyptic number.

It is an amenable number.

27959993 is a deficient number, since it is larger than the sum of its proper divisors (1).

27959993 is an equidigital number, since it uses as much as digits as its factorization.

27959993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1377810, while the sum is 53.

The square root of 27959993 is about 5287.7209646501. The cubic root of 27959993 is about 303.5142034721.

The spelling of 27959993 in words is "twenty-seven million, nine hundred fifty-nine thousand, nine hundred ninety-three".