27489049 has 15 divisors (see below), whose sum is σ = 32371157. Its totient is φ = 23341836.

The previous prime is 27489047. The next prime is 27489053. The reversal of 27489049 is 94098472.

The square root of 27489049 is 5243.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 27489049 - 2¹ = 27489047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27488996 and 27489014.

It is not an unprimeable number, because it can be changed into a prime (27489041) 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 14 ways as a sum of consecutive naturals, for example, 256854 + ... + 256960.

Almost surely, 2^27489049 is an apocalyptic number.

27489049 is the 5243-rd square number.

27489049 is the 2622-nd centered octagonal number.

It is an amenable number.

27489049 is a deficient number, since it is larger than the sum of its proper divisors (4882108).

27489049 is an frugal number, since it uses more digits than its factorization.

27489049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The cubic root of 27489049 is about 301.8004653904.

The spelling of 27489049 in words is "twenty-seven million, four hundred eighty-nine thousand, forty-nine".