11440405 has 8 divisors (see below), whose sum is σ = 14536152. Its totient is φ = 8613888.

The previous prime is 11440399. The next prime is 11440409. The reversal of 11440405 is 50404411.

11440405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1052676 + 10387729 = 1026^2 + 3223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11440405 - 2³ = 11440397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11440409) 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 7 ways as a sum of consecutive naturals, for example, 67212 + ... + 67381.

It is an arithmetic number, because the mean of its divisors is an integer number (1817019).

Almost surely, 2^11440405 is an apocalyptic number.

It is an amenable number.

11440405 is a deficient number, since it is larger than the sum of its proper divisors (3095747).

11440405 is a wasteful number, since it uses less digits than its factorization.

11440405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134615.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 11440405 is about 3382.3667749078. The cubic root of 11440405 is about 225.3272932238.

Adding to 11440405 its reverse (50404411), we get a palindrome (61844816).

The spelling of 11440405 in words is "eleven million, four hundred forty thousand, four hundred five".