499779 has 12 divisors (see below), whose sum is σ = 825136. Its totient is φ = 285552.

The previous prime is 499747. The next prime is 499781. The reversal of 499779 is 977994.

It is not a de Polignac number, because 499779 - 2⁵ = 499747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3904 + ... + 4029.

2⁴⁹⁹⁷⁷⁹ is an apocalyptic number.

499779 is a deficient number, since it is larger than the sum of its proper divisors (325357).

499779 is a wasteful number, since it uses less digits than its factorization.

499779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946 (or 7943 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 499779 is about 706.9504933162. The cubic root of 499779 is about 79.3583570207.

The spelling of 499779 in words is "four hundred ninety-nine thousand, seven hundred seventy-nine".