275449677889 has 9 divisors (see below), whose sum is σ = 278626641577. Its totient is φ = 272308552384.

The previous prime is 275449677871. The next prime is 275449677917. The reversal of 275449677889 is 988776944572.

The square root of 275449677889 is 524833.

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 7531636225 + 267918041664 = 86785^2 + 517608^2 .

It is a de Polignac number, because none of the positive numbers 2^k-275449677889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275449677869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46707189 + ... + 46713085.

Almost surely, 2^275449677889 is an apocalyptic number.

275449677889 is the 524833-rd square number.

275449677889 is the 262417-th centered octagonal number.

It is an amenable number.

275449677889 is a deficient number, since it is larger than the sum of its proper divisors (3176963688).

275449677889 is an frugal number, since it uses more digits than its factorization.

275449677889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11972 (or 5986 counting only the distinct ones).

The product of its digits is 1706987520, while the sum is 76.

The spelling of 275449677889 in words is "two hundred seventy-five billion, four hundred forty-nine million, six hundred seventy-seven thousand, eight hundred eighty-nine".