499981343 has 2 divisors, whose sum is σ = 499981344. Its totient is φ = 499981342.

The previous prime is 499981319. The next prime is 499981351. The reversal of 499981343 is 343189994.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499981343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 499981291 and 499981300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499981243) 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 as a sum of consecutive naturals, namely, 249990671 + 249990672.

It is an arithmetic number, because the mean of its divisors is an integer number (249990672).

Almost surely, 2^499981343 is an apocalyptic number.

499981343 is a deficient number, since it is larger than the sum of its proper divisors (1).

499981343 is an equidigital number, since it uses as much as digits as its factorization.

499981343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 499981343 is about 22360.2625879036. The cubic root of 499981343 is about 793.6906538142.

The spelling of 499981343 in words is "four hundred ninety-nine million, nine hundred eighty-one thousand, three hundred forty-three".