499749 has 16 divisors (see below), whose sum is σ = 725760. Its totient is φ = 304640.

The previous prime is 499747. The next prime is 499781. The reversal of 499749 is 947994.

It is not a de Polignac number, because 499749 - 2¹ = 499747 is a prime.

It is a Curzon number.

499749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 499749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972 + ... + 2210.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁴⁹⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

499749 is a deficient number, since it is larger than the sum of its proper divisors (226011).

499749 is a wasteful number, since it uses less digits than its factorization.

499749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300.

The product of its digits is 81648, while the sum is 42.

The square root of 499749 is about 706.9292751047. The cubic root of 499749 is about 79.3567691199.

The spelling of 499749 in words is "four hundred ninety-nine thousand, seven hundred forty-nine".