516447838 has 8 divisors (see below), whose sum is σ = 787371480. Its totient is φ = 253990680.

The previous prime is 516447821. The next prime is 516447839. The reversal of 516447838 is 838744615.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516447839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116468 + ... + 2116711.

It is an arithmetic number, because the mean of its divisors is an integer number (98421435).

Almost surely, 2^516447838 is an apocalyptic number.

516447838 is a deficient number, since it is larger than the sum of its proper divisors (270923642).

516447838 is a wasteful number, since it uses less digits than its factorization.

516447838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233242.

The product of its digits is 645120, while the sum is 46.

The square root of 516447838 is about 22725.4887296181. The cubic root of 516447838 is about 802.3099062886.

The spelling of 516447838 in words is "five hundred sixteen million, four hundred forty-seven thousand, eight hundred thirty-eight".