8449818 has 32 divisors (see below), whose sum is σ = 18364416. Its totient is φ = 2576448.

The previous prime is 8449807. The next prime is 8449829. The reversal of 8449818 is 8189448.

It is an interprime number because it is at equal distance from previous prime (8449807) and next prime (8449829).

It is a self number, because there is not a number n which added to its sum of digits gives 8449818.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9480 + ... + 10332.

It is an arithmetic number, because the mean of its divisors is an integer number (573888).

Almost surely, 2^8449818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8449818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9182208).

8449818 is an abundant number, since it is smaller than the sum of its proper divisors (9914598).

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

8449818 is a wasteful number, since it uses less digits than its factorization.

8449818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998.

The product of its digits is 73728, while the sum is 42.

The square root of 8449818 is about 2906.8570656295. The cubic root of 8449818 is about 203.6803432834.

It can be divided in two parts, 8 and 449818, that added together give a triangular number (449826 = T₉₄₈).

The spelling of 8449818 in words is "eight million, four hundred forty-nine thousand, eight hundred eighteen".