11404609 has 4 divisors (see below), whose sum is σ = 11481300. Its totient is φ = 11327920.

The previous prime is 11404567. The next prime is 11404633. The reversal of 11404609 is 90640411.

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 1763584 + 9641025 = 1328^2 + 3105^2 .

It is a cyclic number.

It is not a de Polignac number, because 11404609 - 2⁹ = 11404097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11404639) 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, 38122 + ... + 38419.

It is an arithmetic number, because the mean of its divisors is an integer number (2870325).

Almost surely, 2^11404609 is an apocalyptic number.

It is an amenable number.

11404609 is a deficient number, since it is larger than the sum of its proper divisors (76691).

11404609 is an equidigital number, since it uses as much as digits as its factorization.

11404609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76690.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 11404609 is about 3377.0710682483. The cubic root of 11404609 is about 225.0920380661.

The spelling of 11404609 in words is "eleven million, four hundred four thousand, six hundred nine".