520329999 has 32 divisors (see below), whose sum is σ = 841591296. Its totient is φ = 279152640.

The previous prime is 520329949. The next prime is 520330037. The reversal of 520329999 is 999923025.

It is not a de Polignac number, because 520329999 - 2¹⁵ = 520297231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520329949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165159 + ... + 168279.

It is an arithmetic number, because the mean of its divisors is an integer number (26299728).

Almost surely, 2^520329999 is an apocalyptic number.

520329999 is a deficient number, since it is larger than the sum of its proper divisors (321261297).

520329999 is a wasteful number, since it uses less digits than its factorization.

520329999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615.

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 520329999 is about 22810.7430611105. The cubic root of 520329999 is about 804.3152228592.

The spelling of 520329999 in words is "five hundred twenty million, three hundred twenty-nine thousand, nine hundred ninety-nine".