8920217 has 4 divisors (see below), whose sum is σ = 9012276. Its totient is φ = 8828160.

The previous prime is 8920201. The next prime is 8920243. The reversal of 8920217 is 7120298.

It is a happy number.

8920217 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3463321 + 5456896 = 1861^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 8920217 - 2⁴ = 8920201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8920217.

It is not an unprimeable number, because it can be changed into a prime (8920277) 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, 45884 + ... + 46077.

It is an arithmetic number, because the mean of its divisors is an integer number (2253069).

Almost surely, 2^8920217 is an apocalyptic number.

It is an amenable number.

8920217 is a deficient number, since it is larger than the sum of its proper divisors (92059).

8920217 is an equidigital number, since it uses as much as digits as its factorization.

8920217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92058.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8920217 is about 2986.6732328797. The cubic root of 8920217 is about 207.3919077022.

The spelling of 8920217 in words is "eight million, nine hundred twenty thousand, two hundred seventeen".