499978519 has 2 divisors, whose sum is σ = 499978520. Its totient is φ = 499978518.

The previous prime is 499978513. The next prime is 499978537. The reversal of 499978519 is 915879994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 499978519 - 2⁵ = 499978487 is a prime.

It is a super-2 number, since 2×499978519² = 499957038922866722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499978513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249989259 + 249989260.

It is an arithmetic number, because the mean of its divisors is an integer number (249989260).

Almost surely, 2^499978519 is an apocalyptic number.

499978519 is a deficient number, since it is larger than the sum of its proper divisors (1).

499978519 is an equidigital number, since it uses as much as digits as its factorization.

499978519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 61.

The square root of 499978519 is about 22360.1994400766. The cubic root of 499978519 is about 793.6891595007.

The spelling of 499978519 in words is "four hundred ninety-nine million, nine hundred seventy-eight thousand, five hundred nineteen".