889289822978 has 18 divisors (see below), whose sum is σ = 1338432831579. Its totient is φ = 443150574592.

The previous prime is 889289822957. The next prime is 889289823007. The reversal of 889289822978 is 879228982988.

889289822978 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 5 ways, for example, as 345328996609 + 543960826369 = 587647^2 + 737537^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=666817.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 470771858 + ... + 470773746.

Almost surely, 2^889289822978 is an apocalyptic number.

889289822978 is a deficient number, since it is larger than the sum of its proper divisors (449143008601).

889289822978 is an frugal number, since it uses more digits than its factorization.

889289822978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 2244 counting only the distinct ones).

The product of its digits is 1337720832, while the sum is 80.

The spelling of 889289822978 in words is "eight hundred eighty-nine billion, two hundred eighty-nine million, eight hundred twenty-two thousand, nine hundred seventy-eight".