27889249 has 2 divisors, whose sum is σ = 27889250. Its totient is φ = 27889248.

The previous prime is 27889237. The next prime is 27889273. The reversal of 27889249 is 94298872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27457600 + 431649 = 5240^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 27889249 - 2⁵ = 27889217 is a prime.

It is not a weakly prime, because it can be changed into another prime (27889349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13944624 + 13944625.

It is an arithmetic number, because the mean of its divisors is an integer number (13944625).

Almost surely, 2^27889249 is an apocalyptic number.

It is an amenable number.

27889249 is a deficient number, since it is larger than the sum of its proper divisors (1).

27889249 is an equidigital number, since it uses as much as digits as its factorization.

27889249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 49.

The square root of 27889249 is about 5281.0272674926. The cubic root of 27889249 is about 303.2580047487.

The spelling of 27889249 in words is "twenty-seven million, eight hundred eighty-nine thousand, two hundred forty-nine".