404133409 has 4 divisors (see below), whose sum is σ = 404270640. Its totient is φ = 403996180.

The previous prime is 404133397. The next prime is 404133419. The reversal of 404133409 is 904331404.

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 404133409 - 2⁷ = 404133281 is a prime.

It is a super-2 number, since 2×404133409² = 326647624539922562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404133419) 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, 64099 + ... + 70120.

It is an arithmetic number, because the mean of its divisors is an integer number (101067660).

Almost surely, 2^404133409 is an apocalyptic number.

It is an amenable number.

404133409 is a deficient number, since it is larger than the sum of its proper divisors (137231).

404133409 is a wasteful number, since it uses less digits than its factorization.

404133409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137230.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 404133409 is about 20103.0696412264. The cubic root of 404133409 is about 739.3355424610.

The spelling of 404133409 in words is "four hundred four million, one hundred thirty-three thousand, four hundred nine".