8820289 has 8 divisors (see below), whose sum is σ = 9247392. Its totient is φ = 8403360.

The previous prime is 8820283. The next prime is 8820299. The reversal of 8820289 is 9820288.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8820289 - 2⁵ = 8820257 is a prime.

It is a Duffinian number.

8820289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8820283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 4264.

It is an arithmetic number, because the mean of its divisors is an integer number (1155924).

Almost surely, 2^8820289 is an apocalyptic number.

It is an amenable number.

8820289 is a deficient number, since it is larger than the sum of its proper divisors (427103).

8820289 is a wasteful number, since it uses less digits than its factorization.

8820289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8820289 is about 2969.8971362658. The cubic root of 8820289 is about 206.6145674546.

Subtracting 8820289 from its reverse (9820288), we obtain a palindrome (999999).

The spelling of 8820289 in words is "eight million, eight hundred twenty thousand, two hundred eighty-nine".