8820389 has 8 divisors (see below), whose sum is σ = 9372000. Its totient is φ = 8277552.

The previous prime is 8820377. The next prime is 8820397. The reversal of 8820389 is 9830288.

8820389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8820389 - 2⁴ = 8820373 is a prime.

It is a super-2 number, since 2×8820389² = 155598524222642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8820589) 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 7 ways as a sum of consecutive naturals, for example, 59 + ... + 4200.

It is an arithmetic number, because the mean of its divisors is an integer number (1171500).

Almost surely, 2^8820389 is an apocalyptic number.

It is an amenable number.

8820389 is a deficient number, since it is larger than the sum of its proper divisors (551611).

8820389 is a wasteful number, since it uses less digits than its factorization.

8820389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 8820389 is about 2969.9139718180. The cubic root of 8820389 is about 206.6153482823.

The spelling of 8820389 in words is "eight million, eight hundred twenty thousand, three hundred eighty-nine".