520877399 has 16 divisors (see below), whose sum is σ = 643176000. Its totient is φ = 420198912.

The previous prime is 520877351. The next prime is 520877449. The reversal of 520877399 is 993778025.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-520877399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520873399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38834 + ... + 50495.

It is an arithmetic number, because the mean of its divisors is an integer number (40198500).

Almost surely, 2^520877399 is an apocalyptic number.

520877399 is a deficient number, since it is larger than the sum of its proper divisors (122298601).

520877399 is an equidigital number, since it uses as much as digits as its factorization.

520877399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89367 (or 89353 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 520877399 is about 22822.7386393483. The cubic root of 520877399 is about 804.5971771626.

The spelling of 520877399 in words is "five hundred twenty million, eight hundred seventy-seven thousand, three hundred ninety-nine".