889818689 has 4 divisors (see below), whose sum is σ = 895711680. Its totient is φ = 883925700.

The previous prime is 889818673. The next prime is 889818691. The reversal of 889818689 is 986818988.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 889818689 - 2⁴ = 889818673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889818649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2946269 + ... + 2946570.

It is an arithmetic number, because the mean of its divisors is an integer number (223927920).

Almost surely, 2^889818689 is an apocalyptic number.

It is an amenable number.

889818689 is a deficient number, since it is larger than the sum of its proper divisors (5892991).

889818689 is a wasteful number, since it uses less digits than its factorization.

889818689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892990.

The product of its digits is 15925248, while the sum is 65.

The square root of 889818689 is about 29829.8288463075. The cubic root of 889818689 is about 961.8348476652.

The spelling of 889818689 in words is "eight hundred eighty-nine million, eight hundred eighteen thousand, six hundred eighty-nine".