803409 has 4 divisors (see below), whose sum is σ = 1071216. Its totient is φ = 535604.

The previous prime is 803399. The next prime is 803417. The reversal of 803409 is 904308.

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.

It is a cyclic number.

It is not a de Polignac number, because 803409 - 2⁴ = 803393 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (803449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133899 + ... + 133904.

It is an arithmetic number, because the mean of its divisors is an integer number (267804).

2⁸⁰³⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

803409 is a deficient number, since it is larger than the sum of its proper divisors (267807).

803409 is a wasteful number, since it uses less digits than its factorization.

803409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267806.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 803409 is about 896.3308540935. The cubic root of 803409 is about 92.9634496213.

The spelling of 803409 in words is "eight hundred three thousand, four hundred nine".