499109 has 4 divisors (see below), whose sum is σ = 537516. Its totient is φ = 460704.

The previous prime is 499099. The next prime is 499117. The reversal of 499109 is 901994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901994 = 2 ⋅450997.

It can be written as a sum of positive squares in 2 ways, for example, as 112225 + 386884 = 335^2 + 622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499109 is a prime.

It is a Duffinian number.

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 499109.

It is not an unprimeable number, because it can be changed into a prime (499129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19184 + ... + 19209.

It is an arithmetic number, because the mean of its divisors is an integer number (134379).

2⁴⁹⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

499109 is a deficient number, since it is larger than the sum of its proper divisors (38407).

499109 is a wasteful number, since it uses less digits than its factorization.

499109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38406.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 499109 is about 706.4764681148. The cubic root of 499109 is about 79.3228787548.

The spelling of 499109 in words is "four hundred ninety-nine thousand, one hundred nine".