2712638889 has 27 divisors (see below), whose sum is σ = 4075089213. Its totient is φ = 1805613444.

The previous prime is 2712638867. The next prime is 2712638893. The reversal of 2712638889 is 9888362172.

It is a happy number.

The square root of 2712638889 is 52083.

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

It is a tau number, because it is divible by the number of its divisors (27).

It is not a de Polignac number, because 2712638889 - 2¹⁵ = 2712606121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2712638809) 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 26 ways as a sum of consecutive naturals, for example, 4218402 + ... + 4219044.

Almost surely, 2^2712638889 is an apocalyptic number.

2712638889 is the 52083-rd square number.

2712638889 is the 26042-nd centered octagonal number.

It is an amenable number.

2712638889 is a deficient number, since it is larger than the sum of its proper divisors (1362450324).

2712638889 is an frugal number, since it uses more digits than its factorization.

2712638889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 646 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The cubic root of 2712638889 is about 1394.6460288164.

It can be divided in two parts, 2712 and 638889, that added together give a square (641601 = 801²).

The spelling of 2712638889 in words is "two billion, seven hundred twelve million, six hundred thirty-eight thousand, eight hundred eighty-nine".