889621 has 4 divisors (see below), whose sum is σ = 896544. Its totient is φ = 882700.

The previous prime is 889597. The next prime is 889631. The reversal of 889621 is 126988.

889621 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 889621 - 2⁵ = 889589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889631) 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, 3265 + ... + 3526.

It is an arithmetic number, because the mean of its divisors is an integer number (224136).

2⁸⁸⁹⁶²¹ is an apocalyptic number.

It is an amenable number.

889621 is a deficient number, since it is larger than the sum of its proper divisors (6923).

889621 is a wasteful number, since it uses less digits than its factorization.

889621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922.

The product of its digits is 6912, while the sum is 34.

The square root of 889621 is about 943.1972222181. The cubic root of 889621 is about 96.1763612834.

It can be divided in two parts, 88 and 9621, that multiplied together give a palindrome (846648).

The spelling of 889621 in words is "eight hundred eighty-nine thousand, six hundred twenty-one".