516738439 has 16 divisors (see below), whose sum is σ = 605670912. Its totient is φ = 431631648.

The previous prime is 516738433. The next prime is 516738479. The reversal of 516738439 is 934837615.

It is a de Polignac number, because none of the positive numbers 2^k-516738439 is a prime.

It is a super-2 number, since 2×516738439² = 534037228680313442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516738433) 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 15 ways as a sum of consecutive naturals, for example, 149697 + ... + 153109.

It is an arithmetic number, because the mean of its divisors is an integer number (37854432).

Almost surely, 2^516738439 is an apocalyptic number.

516738439 is a deficient number, since it is larger than the sum of its proper divisors (88932473).

516738439 is a wasteful number, since it uses less digits than its factorization.

516738439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966.

The product of its digits is 544320, while the sum is 46.

The square root of 516738439 is about 22731.8815543281. The cubic root of 516738439 is about 802.4603624926.

The spelling of 516738439 in words is "five hundred sixteen million, seven hundred thirty-eight thousand, four hundred thirty-nine".