11405005 has 4 divisors (see below), whose sum is σ = 13686012. Its totient is φ = 9124000.

The previous prime is 11404999. The next prime is 11405029. The reversal of 11405005 is 50050411.

It is a happy number.

11405005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7070281 + 4334724 = 2659^2 + 2082^2 .

It is not a de Polignac number, because 11405005 - 2¹⁹ = 10880717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11405005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140496 + ... + 1140505.

It is an arithmetic number, because the mean of its divisors is an integer number (3421503).

Almost surely, 2^11405005 is an apocalyptic number.

It is an amenable number.

11405005 is a deficient number, since it is larger than the sum of its proper divisors (2281007).

11405005 is an equidigital number, since it uses as much as digits as its factorization.

11405005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281006.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 11405005 is about 3377.1296984273. The cubic root of 11405005 is about 225.0946433115.

Adding to 11405005 its reverse (50050411), we get a palindrome (61455416).

The spelling of 11405005 in words is "eleven million, four hundred five thousand, five".