495909 has 8 divisors (see below), whose sum is σ = 734720. Its totient is φ = 330588.

The previous prime is 495899. The next prime is 495923. The reversal of 495909 is 909594.

It is not a de Polignac number, because 495909 - 2⁴ = 495893 is a prime.

It is a Duffinian number.

495909 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9157 + ... + 9210.

It is an arithmetic number, because the mean of its divisors is an integer number (91840).

2⁴⁹⁵⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

495909 is a deficient number, since it is larger than the sum of its proper divisors (238811).

495909 is a wasteful number, since it uses less digits than its factorization.

495909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18376 (or 18370 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 495909 is about 704.2080658442. The cubic root of 495909 is about 79.1529909279.

The spelling of 495909 in words is "four hundred ninety-five thousand, nine hundred nine".