499718 has 4 divisors (see below), whose sum is σ = 749580. Its totient is φ = 249858.

The previous prime is 499717. The next prime is 499729. The reversal of 499718 is 817994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 817994 = 2 ⋅408997.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499718.

It is not an unprimeable number, because it can be changed into a prime (499711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124928 + ... + 124931.

It is an arithmetic number, because the mean of its divisors is an integer number (187395).

2⁴⁹⁹⁷¹⁸ is an apocalyptic number.

499718 is a deficient number, since it is larger than the sum of its proper divisors (249862).

499718 is a wasteful number, since it uses less digits than its factorization.

499718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249861.

The product of its digits is 18144, while the sum is 38.

The square root of 499718 is about 706.9073489503. The cubic root of 499718 is about 79.3551282224.

The spelling of 499718 in words is "four hundred ninety-nine thousand, seven hundred eighteen".