889209 has 6 divisors (see below), whose sum is σ = 1284426. Its totient is φ = 592800.

The previous prime is 889177. The next prime is 889211. The reversal of 889209 is 902988.

It can be written as a sum of positive squares in only one way, i.e., 837225 + 51984 = 915^2 + 228^2 .

It is not a de Polignac number, because 889209 - 2⁵ = 889177 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (889279) 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 5 ways as a sum of consecutive naturals, for example, 49392 + ... + 49409.

It is an arithmetic number, because the mean of its divisors is an integer number (214071).

2⁸⁸⁹²⁰⁹ is an apocalyptic number.

It is an amenable number.

889209 is a deficient number, since it is larger than the sum of its proper divisors (395217).

889209 is a wasteful number, since it uses less digits than its factorization.

889209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98807 (or 98804 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 889209 is about 942.9787908537. The cubic root of 889209 is about 96.1615119714.

The spelling of 889209 in words is "eight hundred eighty-nine thousand, two hundred nine".