469809 has 6 divisors (see below), whose sum is σ = 678626. Its totient is φ = 313200.

The previous prime is 469801. The next prime is 469811. The reversal of 469809 is 908964.

It can be written as a sum of positive squares in only one way, i.e., 451584 + 18225 = 672^2 + 135^2 .

It is not a de Polignac number, because 469809 - 2³ = 469801 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 469809.

It is not an unprimeable number, because it can be changed into a prime (469801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26092 + ... + 26109.

2⁴⁶⁹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

469809 is a deficient number, since it is larger than the sum of its proper divisors (208817).

469809 is a wasteful number, since it uses less digits than its factorization.

469809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52207 (or 52204 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 469809 is about 685.4261448180. The cubic root of 469809 is about 77.7392674812.

The spelling of 469809 in words is "four hundred sixty-nine thousand, eight hundred nine".