520299999 has 12 divisors (see below), whose sum is σ = 762130512. Its totient is φ = 341980800.

The previous prime is 520299973. The next prime is 520300003. The reversal of 520299999 is 999992025.

520299999 is a `hidden beast` number, since 520 + 29 + 9 + 9 + 99 = 666.

It is not a de Polignac number, because 520299999 - 2⁹ = 520299487 is a prime.

520299999 is a modest number, since divided by 99999 gives 5202 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520299919) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 406482 + ... + 407759.

It is an arithmetic number, because the mean of its divisors is an integer number (63510876).

Almost surely, 2^520299999 is an apocalyptic number.

520299999 is a deficient number, since it is larger than the sum of its proper divisors (241830513).

520299999 is a wasteful number, since it uses less digits than its factorization.

520299999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814318 (or 814315 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 520299999 is about 22810.0854667404. The cubic root of 520299999 is about 804.2997647714.

The spelling of 520299999 in words is "five hundred twenty million, two hundred ninety-nine thousand, nine hundred ninety-nine".