99007218 has 64 divisors (see below), whose sum is σ = 241056000. Its totient is φ = 29981952.

The previous prime is 99007217. The next prime is 99007229. The reversal of 99007218 is 81270099.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99007217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24763 + ... + 28481.

It is an arithmetic number, because the mean of its divisors is an integer number (3766500).

Almost surely, 2^99007218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99007218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120528000).

99007218 is an abundant number, since it is smaller than the sum of its proper divisors (142048782).

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

99007218 is a wasteful number, since it uses less digits than its factorization.

99007218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776 (or 3770 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 99007218 is about 9950.2370826026. The cubic root of 99007218 is about 462.6177433849.

It can be divided in two parts, 99007 and 218, that added together give a square (99225 = 315²).

The spelling of 99007218 in words is "ninety-nine million, seven thousand, two hundred eighteen".