884021 has 4 divisors (see below), whose sum is σ = 896544. Its totient is φ = 871500.

The previous prime is 884011. The next prime is 884029. The reversal of 884021 is 120488.

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 a de Polignac number, because none of the positive numbers 2^k-884021 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 (884029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6155 + ... + 6296.

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

2⁸⁸⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

884021 is a deficient number, since it is larger than the sum of its proper divisors (12523).

884021 is a wasteful number, since it uses less digits than its factorization.

884021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12522.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 884021 is about 940.2239095024. The cubic root of 884021 is about 95.9741322086.

The spelling of 884021 in words is "eight hundred eighty-four thousand, twenty-one".