8920229 has 4 divisors (see below), whose sum is σ = 8929260. Its totient is φ = 8911200.

The previous prime is 8920201. The next prime is 8920243. The reversal of 8920229 is 9220298.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9220298 = 2 ⋅4610149.

It can be written as a sum of positive squares in 2 ways, for example, as 3150625 + 5769604 = 1775^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 8920229 - 2¹⁶ = 8854693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8920195 and 8920204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8920279) 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, 2822 + ... + 5079.

It is an arithmetic number, because the mean of its divisors is an integer number (2232315).

Almost surely, 2^8920229 is an apocalyptic number.

It is an amenable number.

8920229 is a deficient number, since it is larger than the sum of its proper divisors (9031).

8920229 is a wasteful number, since it uses less digits than its factorization.

8920229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9030.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 8920229 is about 2986.6752418032. The cubic root of 8920229 is about 207.3920007007.

The spelling of 8920229 in words is "eight million, nine hundred twenty thousand, two hundred twenty-nine".