27387933049 has 9 divisors (see below), whose sum is σ = 27854542989. Its totient is φ = 26929020960.

The previous prime is 27387933043. The next prime is 27387933071. The reversal of 27387933049 is 94033978372.

The square root of 27387933049 is 165493.

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

It can be written as a sum of positive squares in 4 ways, for example, as 119355625 + 27268577424 = 10925^2 + 165132^2 .

It is not a de Polignac number, because 27387933049 - 2⁷ = 27387932921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27387933043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10093717 + ... + 10096429.

It is an arithmetic number, because the mean of its divisors is an integer number (3094949221).

Almost surely, 2^27387933049 is an apocalyptic number.

27387933049 is the 165493-rd square number.

27387933049 is the 82747-th centered octagonal number.

It is an amenable number.

27387933049 is a deficient number, since it is larger than the sum of its proper divisors (466609940).

27387933049 is an frugal number, since it uses more digits than its factorization.

27387933049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 27387933049 in words is "twenty-seven billion, three hundred eighty-seven million, nine hundred thirty-three thousand, forty-nine".