999041505 has 64 divisors (see below), whose sum is σ = 2018304000. Its totient is φ = 409893120.

The previous prime is 999041473. The next prime is 999041539. The reversal of 999041505 is 505140999.

It is a happy number.

999041505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 999041505 - 2⁵ = 999041473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85771 + ... + 96719.

It is an arithmetic number, because the mean of its divisors is an integer number (31536000).

Almost surely, 2^999041505 is an apocalyptic number.

999041505 is the 18249-th octagonal number.

It is an amenable number.

999041505 is an abundant number, since it is smaller than the sum of its proper divisors (1019262495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999041505 is a wasteful number, since it uses less digits than its factorization.

999041505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11054.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 999041505 is about 31607.6178317823. The cubic root of 999041505 is about 999.6803995331.

The spelling of 999041505 in words is "nine hundred ninety-nine million, forty-one thousand, five hundred five".