520442899 has 4 divisors (see below), whose sum is σ = 520494136. Its totient is φ = 520391664.

The previous prime is 520442893. The next prime is 520442921. The reversal of 520442899 is 998244025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 520442899 - 2⁹ = 520442387 is a prime.

It is a super-2 number, since 2×520442899² = 541721622239048402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520442893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4674 + ... + 32599.

It is an arithmetic number, because the mean of its divisors is an integer number (130123534).

Almost surely, 2^520442899 is an apocalyptic number.

520442899 is a deficient number, since it is larger than the sum of its proper divisors (51237).

520442899 is a wasteful number, since it uses less digits than its factorization.

520442899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51236.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 520442899 is about 22813.2176380273. The cubic root of 520442899 is about 804.3733914713.

The spelling of 520442899 in words is "five hundred twenty million, four hundred forty-two thousand, eight hundred ninety-nine".