8499018 has 32 divisors (see below), whose sum is σ = 18703872. Its totient is φ = 2553200.

The previous prime is 8498999. The next prime is 8499037. The reversal of 8499018 is 8109948.

Added to its reverse (8109948) it gives a triangular number (16608966 = T₅₇₆₃).

It is an interprime number because it is at equal distance from previous prime (8498999) and next prime (8499037).

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, 8155 + ... + 9137.

It is an arithmetic number, because the mean of its divisors is an integer number (584496).

Almost surely, 2^8499018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8499018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9351936).

8499018 is an abundant number, since it is smaller than the sum of its proper divisors (10204854).

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

8499018 is a wasteful number, since it uses less digits than its factorization.

8499018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 8499018 is about 2915.3075309476. The cubic root of 8499018 is about 204.0748956063.

Adding to 8499018 its reverse (8109948), we get a triangular number (16608966 = T₅₇₆₃).

The spelling of 8499018 in words is "eight million, four hundred ninety-nine thousand, eighteen".