889521 has 4 divisors (see below), whose sum is σ = 1186032. Its totient is φ = 593012.

The previous prime is 889519. The next prime is 889579. The reversal of 889521 is 125988.

It is a happy number.

889521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 889521 - 2¹ = 889519 is a prime.

It is a D-number.

889521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (889501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148251 + ... + 148256.

It is an arithmetic number, because the mean of its divisors is an integer number (296508).

2⁸⁸⁹⁵²¹ is an apocalyptic number.

It is an amenable number.

889521 is a deficient number, since it is larger than the sum of its proper divisors (296511).

889521 is a wasteful number, since it uses less digits than its factorization.

889521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296510.

The product of its digits is 5760, while the sum is 33.

The square root of 889521 is about 943.1442095459. The cubic root of 889521 is about 96.1727575029.

The spelling of 889521 in words is "eight hundred eighty-nine thousand, five hundred twenty-one".