11440404 has 18 divisors (see below), whose sum is σ = 28918890. Its totient is φ = 3813456.

The previous prime is 11440399. The next prime is 11440409. The reversal of 11440404 is 40404411.

It is an interprime number because it is at equal distance from previous prime (11440399) and next prime (11440409).

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 864900 = 3252^2 + 930^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158859 + ... + 158930.

It is an arithmetic number, because the mean of its divisors is an integer number (1606605).

Almost surely, 2^11440404 is an apocalyptic number.

It is an amenable number.

11440404 is an abundant number, since it is smaller than the sum of its proper divisors (17478486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11440404 is a wasteful number, since it uses less digits than its factorization.

11440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317799 (or 317794 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 11440404 is about 3382.3666270823. The cubic root of 11440404 is about 225.3272866585.

Adding to 11440404 its reverse (40404411), we get a palindrome (51844815).

The spelling of 11440404 in words is "eleven million, four hundred forty thousand, four hundred four".