434809 has 4 divisors (see below), whose sum is σ = 460404. Its totient is φ = 409216.

The previous prime is 434807. The next prime is 434813. The reversal of 434809 is 908434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156025 + 278784 = 395^2 + 528^2 .

It is a cyclic number.

It is not a de Polignac number, because 434809 - 2¹ = 434807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (434803) 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, 12772 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (115101).

2⁴³⁴⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

434809 is a deficient number, since it is larger than the sum of its proper divisors (25595).

434809 is a wasteful number, since it uses less digits than its factorization.

434809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25594.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 434809 is about 659.4004852895. The cubic root of 434809 is about 75.7587572066.

The spelling of 434809 in words is "four hundred thirty-four thousand, eight hundred nine".