43855479889 has 27 divisors (see below), whose sum is σ = 48294866259. Its totient is φ = 39805983360.

The previous prime is 43855479881. The next prime is 43855479901. The reversal of 43855479889 is 98897455834.

The square root of 43855479889 is 209417.

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

43855479889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 13 ways, for example, as 29164100625 + 14691379264 = 170775^2 + 121208^2 .

It is not a de Polignac number, because 43855479889 - 2³ = 43855479881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43855479881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 242295379 + ... + 242295559.

Almost surely, 2^43855479889 is an apocalyptic number.

43855479889 is the 209417-th square number.

43855479889 is the 104709-th centered octagonal number.

It is an amenable number.

43855479889 is a deficient number, since it is larger than the sum of its proper divisors (4439386370).

43855479889 is an frugal number, since it uses more digits than its factorization.

43855479889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 283 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 70.

The spelling of 43855479889 in words is "forty-three billion, eight hundred fifty-five million, four hundred seventy-nine thousand, eight hundred eighty-nine".