8229021 has 4 divisors (see below), whose sum is σ = 10972032. Its totient is φ = 5486012.

The previous prime is 8229019. The next prime is 8229031. The reversal of 8229021 is 1209228.

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 8229021 - 2¹ = 8229019 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8228982 and 8229000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8229031) 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, 1371501 + ... + 1371506.

It is an arithmetic number, because the mean of its divisors is an integer number (2743008).

Almost surely, 2^8229021 is an apocalyptic number.

It is an amenable number.

8229021 is a deficient number, since it is larger than the sum of its proper divisors (2743011).

8229021 is a wasteful number, since it uses less digits than its factorization.

8229021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743010.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 8229021 is about 2868.6270235079. The cubic root of 8229021 is about 201.8905805469.

The spelling of 8229021 in words is "eight million, two hundred twenty-nine thousand, twenty-one".