99509218 has 8 divisors (see below), whose sum is σ = 150180048. Its totient is φ = 49449204.

The previous prime is 99509191. The next prime is 99509257. The reversal of 99509218 is 81290599.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152296 + ... + 152947.

It is an arithmetic number, because the mean of its divisors is an integer number (18772506).

Almost surely, 2^99509218 is an apocalyptic number.

99509218 is a deficient number, since it is larger than the sum of its proper divisors (50670830).

99509218 is a wasteful number, since it uses less digits than its factorization.

99509218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305408.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 99509218 is about 9975.4307175179. The cubic root of 99509218 is about 463.3983016512.

The spelling of 99509218 in words is "ninety-nine million, five hundred nine thousand, two hundred eighteen".