27890497 has 2 divisors, whose sum is σ = 27890498. Its totient is φ = 27890496.

The previous prime is 27890477. The next prime is 27890519. The reversal of 27890497 is 79409872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22316176 + 5574321 = 4724^2 + 2361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27890497 is a prime.

It is not a weakly prime, because it can be changed into another prime (27890417) 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, 13945248 + 13945249.

It is an arithmetic number, because the mean of its divisors is an integer number (13945249).

Almost surely, 2^27890497 is an apocalyptic number.

It is an amenable number.

27890497 is a deficient number, since it is larger than the sum of its proper divisors (1).

27890497 is an equidigital number, since it uses as much as digits as its factorization.

27890497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 27890497 is about 5281.1454250001. The cubic root of 27890497 is about 303.2625281207.

The spelling of 27890497 in words is "twenty-seven million, eight hundred ninety thousand, four hundred ninety-seven".