435409 has 4 divisors (see below), whose sum is σ = 468916. Its totient is φ = 401904.

The previous prime is 435403. The next prime is 435419. The reversal of 435409 is 904534.

435409 is nontrivially palindromic in base 12.

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 297025 + 138384 = 545^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 435409 - 2³ = 435401 is a prime.

It is a Duffinian number.

435409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (435401) 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, 16734 + ... + 16759.

It is an arithmetic number, because the mean of its divisors is an integer number (117229).

2⁴³⁵⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

435409 is a deficient number, since it is larger than the sum of its proper divisors (33507).

435409 is a wasteful number, since it uses less digits than its factorization.

435409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33506.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 435409 is about 659.8552871653. The cubic root of 435409 is about 75.7935881034.

The spelling of 435409 in words is "four hundred thirty-five thousand, four hundred nine".