990735305 has 8 divisors (see below), whose sum is σ = 1358722752. Its totient is φ = 679361328.

The previous prime is 990735253. The next prime is 990735313. The reversal of 990735305 is 503537099.

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

It is a cyclic number.

It is not a de Polignac number, because 990735305 - 2¹⁰ = 990734281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14153327 + ... + 14153396.

It is an arithmetic number, because the mean of its divisors is an integer number (169840344).

Almost surely, 2^990735305 is an apocalyptic number.

It is an amenable number.

990735305 is a deficient number, since it is larger than the sum of its proper divisors (367987447).

990735305 is a wasteful number, since it uses less digits than its factorization.

990735305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28306735.

The product of its (nonzero) digits is 127575, while the sum is 41.

The square root of 990735305 is about 31475.9480397334. The cubic root of 990735305 is about 996.9021817649.

The spelling of 990735305 in words is "nine hundred ninety million, seven hundred thirty-five thousand, three hundred five".