532409 has 4 divisors (see below), whose sum is σ = 533904. Its totient is φ = 530916.

The previous prime is 532403. The next prime is 532417. The reversal of 532409 is 904235.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 904235 = 5 ⋅180847.

It is a cyclic number.

It is not a de Polignac number, because 532409 - 2⁸ = 532153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (532403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (133476).

2⁵³²⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

532409 is a deficient number, since it is larger than the sum of its proper divisors (1495).

532409 is an equidigital number, since it uses as much as digits as its factorization.

532409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 532409 is about 729.6636211296. The cubic root of 532409 is about 81.0491496656.

The spelling of 532409 in words is "five hundred thirty-two thousand, four hundred nine".