27889449 has 16 divisors (see below), whose sum is σ = 43038720. Its totient is φ = 15734160.

The previous prime is 27889441. The next prime is 27889457. The reversal of 27889449 is 94498872.

It is an interprime number because it is at equal distance from previous prime (27889441) and next prime (27889457).

It is not a de Polignac number, because 27889449 - 2³ = 27889441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27889441) 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 in 15 ways as a sum of consecutive naturals, for example, 6747 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (2689920).

Almost surely, 2^27889449 is an apocalyptic number.

It is an amenable number.

27889449 is a deficient number, since it is larger than the sum of its proper divisors (15149271).

27889449 is a wasteful number, since it uses less digits than its factorization.

27889449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16900.

The product of its digits is 1161216, while the sum is 51.

The square root of 27889449 is about 5281.0462031685. The cubic root of 27889449 is about 303.2587296571.

The spelling of 27889449 in words is "twenty-seven million, eight hundred eighty-nine thousand, four hundred forty-nine".