499609 has 6 divisors (see below), whose sum is σ = 549290. Its totient is φ = 454080.

The previous prime is 499607. The next prime is 499621. The reversal of 499609 is 906994.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 64009 = 660^2 + 253^2 .

It is not a de Polignac number, because 499609 - 2¹ = 499607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1944 + ... + 2185.

2⁴⁹⁹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

499609 is a deficient number, since it is larger than the sum of its proper divisors (49681).

499609 is a wasteful number, since it uses less digits than its factorization.

499609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151 (or 4140 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 499609 is about 706.8302483624. The cubic root of 499609 is about 79.3493580761.

The spelling of 499609 in words is "four hundred ninety-nine thousand, six hundred nine".