999999513 has 20 divisors (see below), whose sum is σ = 1494717840. Its totient is φ = 666268632.

The previous prime is 999999503. The next prime is 999999527. The reversal of 999999513 is 315999999.

999999513 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 999999513 - 2⁹ = 999999001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999999503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 206506 + ... + 211292.

It is an arithmetic number, because the mean of its divisors is an integer number (74735892).

Almost surely, 2^999999513 is an apocalyptic number.

It is an amenable number.

999999513 is a deficient number, since it is larger than the sum of its proper divisors (494718327).

999999513 is a wasteful number, since it uses less digits than its factorization.

999999513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7378 (or 7369 counting only the distinct ones).

The product of its digits is 7971615, while the sum is 63.

The square root of 999999513 is about 31622.7689015368. The cubic root of 999999513 is about 999.9998376666. Note that the first 3 decimals are identical.

The spelling of 999999513 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, five hundred thirteen".