991042935 has 16 divisors (see below), whose sum is σ = 1591526400. Its totient is φ = 526603680.

The previous prime is 991042879. The next prime is 991042961. The reversal of 991042935 is 539240199.

It is not a de Polignac number, because 991042935 - 2¹¹ = 991040887 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 117835 + ... + 125964.

It is an arithmetic number, because the mean of its divisors is an integer number (99470400).

Almost surely, 2^991042935 is an apocalyptic number.

991042935 is a deficient number, since it is larger than the sum of its proper divisors (600483465).

991042935 is a wasteful number, since it uses less digits than its factorization.

991042935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244078.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 991042935 is about 31480.8344076201. The cubic root of 991042935 is about 997.0053527062.

The spelling of 991042935 in words is "nine hundred ninety-one million, forty-two thousand, nine hundred thirty-five".