499709 has 4 divisors (see below), whose sum is σ = 571104. Its totient is φ = 428316.

The previous prime is 499693. The next prime is 499711. The reversal of 499709 is 907994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 499709 - 2⁴ = 499693 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 35687 + ... + 35700.

It is an arithmetic number, because the mean of its divisors is an integer number (142776).

2⁴⁹⁹⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

499709 is a deficient number, since it is larger than the sum of its proper divisors (71395).

499709 is an equidigital number, since it uses as much as digits as its factorization.

499709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71394.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 499709 is about 706.9009831653. The cubic root of 499709 is about 79.3546518201.

The spelling of 499709 in words is "four hundred ninety-nine thousand, seven hundred nine".