87044471089 has 3 divisors (see below), whose sum is σ = 87044766123. Its totient is φ = 87044176056.

The previous prime is 87044471077. The next prime is 87044471099. The reversal of 87044471089 is 98017444078.

It is a happy number.

The square root of 87044471089 is 295033.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 36505834225 + 50538636864 = 191065^2 + 224808^2 .

It is not a de Polignac number, because 87044471089 - 2²³ = 87036082481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87044471099) 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 2 ways as a sum of consecutive naturals, for example, 147517 + ... + 442549.

It is an arithmetic number, because the mean of its divisors is an integer number (29014922041).

Almost surely, 2^87044471089 is an apocalyptic number.

87044471089 is the 295033-rd square number.

87044471089 is the 147517-th centered octagonal number.

It is an amenable number.

87044471089 is a deficient number, since it is larger than the sum of its proper divisors (295034).

87044471089 is an frugal number, since it uses more digits than its factorization.

87044471089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590066 (or 295033 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 87044471089 in words is "eighty-seven billion, forty-four million, four hundred seventy-one thousand, eighty-nine".