8389818 has 48 divisors (see below), whose sum is σ = 19227936. Its totient is φ = 2741040.

The previous prime is 8389813. The next prime is 8389819. The reversal of 8389818 is 8189838.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8389813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29505 + ... + 29787.

It is an arithmetic number, because the mean of its divisors is an integer number (400582).

Almost surely, 2^8389818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8389818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9613968).

8389818 is an abundant number, since it is smaller than the sum of its proper divisors (10838118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8389818 is a wasteful number, since it uses less digits than its factorization.

8389818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 349 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 8389818 is about 2896.5182547327. The cubic root of 8389818 is about 203.1971036488.

The spelling of 8389818 in words is "eight million, three hundred eighty-nine thousand, eight hundred eighteen".