889816 has 8 divisors (see below), whose sum is σ = 1668420. Its totient is φ = 444904.

The previous prime is 889783. The next prime is 889829. The reversal of 889816 is 618988.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 889816.

It is an unprimeable number.

889816 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 55606 + ... + 55621.

2⁸⁸⁹⁸¹⁶ is an apocalyptic number.

It is an amenable number.

889816 is a deficient number, since it is larger than the sum of its proper divisors (778604).

889816 is a wasteful number, since it uses less digits than its factorization.

889816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111233 (or 111229 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 889816 is about 943.3005883598. The cubic root of 889816 is about 96.1833878787.

The spelling of 889816 in words is "eight hundred eighty-nine thousand, eight hundred sixteen".