889561 has 4 divisors (see below), whose sum is σ = 936400. Its totient is φ = 842724.

The previous prime is 889519. The next prime is 889579. The reversal of 889561 is 165988.

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 889561 - 2¹³ = 881369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 889561.

It is not an unprimeable number, because it can be changed into a prime (889501) 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, 23391 + ... + 23428.

It is an arithmetic number, because the mean of its divisors is an integer number (234100).

2⁸⁸⁹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

889561 is a deficient number, since it is larger than the sum of its proper divisors (46839).

889561 is a wasteful number, since it uses less digits than its factorization.

889561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46838.

The product of its digits is 17280, while the sum is 37.

The square root of 889561 is about 943.1654149724. The cubic root of 889561 is about 96.1741990475.

The spelling of 889561 in words is "eight hundred eighty-nine thousand, five hundred sixty-one".