516777399 has 12 divisors (see below), whose sum is σ = 749364096. Its totient is φ = 343176192.

The previous prime is 516777389. The next prime is 516777403. The reversal of 516777399 is 993777615.

It is not a de Polignac number, because 516777399 - 2⁴ = 516777383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516777389) 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 11 ways as a sum of consecutive naturals, for example, 109399 + ... + 114024.

It is an arithmetic number, because the mean of its divisors is an integer number (62447008).

Almost surely, 2^516777399 is an apocalyptic number.

516777399 is a deficient number, since it is larger than the sum of its proper divisors (232586697).

516777399 is a wasteful number, since it uses less digits than its factorization.

516777399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223686 (or 223683 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 54.

The square root of 516777399 is about 22732.7384843973. The cubic root of 516777399 is about 802.4805294138.

The spelling of 516777399 in words is "five hundred sixteen million, seven hundred seventy-seven thousand, three hundred ninety-nine".