99009305 has 4 divisors (see below), whose sum is σ = 118811172. Its totient is φ = 79207440.

The previous prime is 99009271. The next prime is 99009311. The reversal of 99009305 is 50390099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71436304 + 27573001 = 8452^2 + 5251^2 .

It is not a de Polignac number, because 99009305 - 2²⁰ = 97960729 is a prime.

It is a Duffinian number.

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, 9900926 + ... + 9900935.

It is an arithmetic number, because the mean of its divisors is an integer number (29702793).

Almost surely, 2^99009305 is an apocalyptic number.

It is an amenable number.

99009305 is a deficient number, since it is larger than the sum of its proper divisors (19801867).

99009305 is a wasteful number, since it uses less digits than its factorization.

99009305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19801866.

The product of its (nonzero) digits is 10935, while the sum is 35.

The square root of 99009305 is about 9950.3419539230. The cubic root of 99009305 is about 462.6209939103.

It can be divided in two parts, 9 and 9009305, that multiplied together give a triangular number (81083745 = T₁₂₇₃₄).

The spelling of 99009305 in words is "ninety-nine million, nine thousand, three hundred five".