889689 has 4 divisors (see below), whose sum is σ = 1186256. Its totient is φ = 593124.

The previous prime is 889687. The next prime is 889697. The reversal of 889689 is 986988.

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 not a de Polignac number, because 889689 - 2¹ = 889687 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148279 + ... + 148284.

It is an arithmetic number, because the mean of its divisors is an integer number (296564).

2⁸⁸⁹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

889689 is a deficient number, since it is larger than the sum of its proper divisors (296567).

889689 is a wasteful number, since it uses less digits than its factorization.

889689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296566.

The product of its digits is 248832, while the sum is 48.

The square root of 889689 is about 943.2332691334. The cubic root of 889689 is about 96.1788116999.

The spelling of 889689 in words is "eight hundred eighty-nine thousand, six hundred eighty-nine".