520309699 has 16 divisors (see below), whose sum is σ = 674087680. Its totient is φ = 390005280.

The previous prime is 520309679. The next prime is 520309717. The reversal of 520309699 is 996903025.

It is not a de Polignac number, because 520309699 - 2⁹ = 520309187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520309679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148737 + ... + 152194.

It is an arithmetic number, because the mean of its divisors is an integer number (42130480).

Almost surely, 2^520309699 is an apocalyptic number.

520309699 is a deficient number, since it is larger than the sum of its proper divisors (153777981).

520309699 is a wasteful number, since it uses less digits than its factorization.

520309699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300970.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 520309699 is about 22810.2980909939. The cubic root of 520309699 is about 804.3047629514.

The spelling of 520309699 in words is "five hundred twenty million, three hundred nine thousand, six hundred ninety-nine".