499778 has 8 divisors (see below), whose sum is σ = 753168. Its totient is φ = 248724.

The previous prime is 499747. The next prime is 499781. The reversal of 499778 is 877994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

499778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 1007.

It is an arithmetic number, because the mean of its divisors is an integer number (94146).

2⁴⁹⁹⁷⁷⁸ is an apocalyptic number.

499778 is a deficient number, since it is larger than the sum of its proper divisors (253390).

499778 is a wasteful number, since it uses less digits than its factorization.

499778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its digits is 127008, while the sum is 44.

The square root of 499778 is about 706.9497860527. The cubic root of 499778 is about 79.3583040917.

The spelling of 499778 in words is "four hundred ninety-nine thousand, seven hundred seventy-eight".