516949 has 2 divisors, whose sum is σ = 516950. Its totient is φ = 516948.

The previous prime is 516947. The next prime is 516959. The reversal of 516949 is 949615.

516949 is nontrivially palindromic in base 14.

516949 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 174724 = 585^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 516949 - 2¹ = 516947 is a prime.

Together with 516947, it forms a pair of twin primes.

516949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258474 + 258475.

It is an arithmetic number, because the mean of its divisors is an integer number (258475).

2⁵¹⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

516949 is a deficient number, since it is larger than the sum of its proper divisors (1).

516949 is an equidigital number, since it uses as much as digits as its factorization.

516949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 516949 is about 718.9916550281. The cubic root of 516949 is about 80.2569343425.

The spelling of 516949 in words is "five hundred sixteen thousand, nine hundred forty-nine".