889644673 has 4 divisors (see below), whose sum is σ = 910334128. Its totient is φ = 868955220.

The previous prime is 889644667. The next prime is 889644677. The reversal of 889644673 is 376446988.

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 889644673 - 2⁵ = 889644641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889644677) 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 3 ways as a sum of consecutive naturals, for example, 10344663 + ... + 10344748.

It is an arithmetic number, because the mean of its divisors is an integer number (227583532).

Almost surely, 2^889644673 is an apocalyptic number.

It is an amenable number.

889644673 is a deficient number, since it is larger than the sum of its proper divisors (20689455).

889644673 is a wasteful number, since it uses less digits than its factorization.

889644673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20689454.

The product of its digits is 6967296, while the sum is 55.

The square root of 889644673 is about 29826.9118917799. The cubic root of 889644673 is about 961.7721436683.

The spelling of 889644673 in words is "eight hundred eighty-nine million, six hundred forty-four thousand, six hundred seventy-three".