519947 has 2 divisors, whose sum is σ = 519948. Its totient is φ = 519946.

The previous prime is 519943. The next prime is 519971. The reversal of 519947 is 749915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 519947 - 2² = 519943 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (519943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259973 + 259974.

It is an arithmetic number, because the mean of its divisors is an integer number (259974).

2⁵¹⁹⁹⁴⁷ is an apocalyptic number.

519947 is a deficient number, since it is larger than the sum of its proper divisors (1).

519947 is an equidigital number, since it uses as much as digits as its factorization.

519947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 519947 is about 721.0735052684. The cubic root of 519947 is about 80.4117830474.

The spelling of 519947 in words is "five hundred nineteen thousand, nine hundred forty-seven".