924221 has 4 divisors (see below), whose sum is σ = 936000. Its totient is φ = 912444.

The previous prime is 924197. The next prime is 924241. The reversal of 924221 is 122429.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122429 = 23 ⋅5323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-924221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 924193 and 924202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (924241) 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, 5771 + ... + 5928.

It is an arithmetic number, because the mean of its divisors is an integer number (234000).

2⁹²⁴²²¹ is an apocalyptic number.

It is an amenable number.

924221 is a deficient number, since it is larger than the sum of its proper divisors (11779).

924221 is a wasteful number, since it uses less digits than its factorization.

924221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11778.

The product of its digits is 288, while the sum is 20.

The square root of 924221 is about 961.3641349666. The cubic root of 924221 is about 97.4073983814.

The spelling of 924221 in words is "nine hundred twenty-four thousand, two hundred twenty-one".