27999841 has 2 divisors, whose sum is σ = 27999842. Its totient is φ = 27999840.

The previous prime is 27999791. The next prime is 27999857. The reversal of 27999841 is 14899972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25969216 + 2030625 = 5096^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 27999841 - 2⁹ = 27999329 is a prime.

It is not a weakly prime, because it can be changed into another prime (27990841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13999920 + 13999921.

It is an arithmetic number, because the mean of its divisors is an integer number (13999921).

Almost surely, 2^27999841 is an apocalyptic number.

It is an amenable number.

27999841 is a deficient number, since it is larger than the sum of its proper divisors (1).

27999841 is an equidigital number, since it uses as much as digits as its factorization.

27999841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 27999841 is about 5291.4875980201. The cubic root of 27999841 is about 303.6583224036.

The spelling of 27999841 in words is "twenty-seven million, nine hundred ninety-nine thousand, eight hundred forty-one".