99541209 has 8 divisors (see below), whose sum is σ = 139707040. Its totient is φ = 62868096.

The previous prime is 99541207. The next prime is 99541213. The reversal of 99541209 is 90214599.

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

It is not a de Polignac number, because 99541209 - 2¹ = 99541207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99541207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873112 + ... + 873225.

It is an arithmetic number, because the mean of its divisors is an integer number (17463380).

Almost surely, 2^99541209 is an apocalyptic number.

It is an amenable number.

99541209 is a deficient number, since it is larger than the sum of its proper divisors (40165831).

99541209 is a wasteful number, since it uses less digits than its factorization.

99541209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746359.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 99541209 is about 9977.0340783221. The cubic root of 99541209 is about 463.4479552981.

The spelling of 99541209 in words is "ninety-nine million, five hundred forty-one thousand, two hundred nine".