100440404 has 12 divisors (see below), whose sum is σ = 178652628. Its totient is φ = 49396800.

The previous prime is 100440401. The next prime is 100440407. The reversal of 100440404 is 404044001.

It is an interprime number because it is at equal distance from previous prime (100440401) and next prime (100440407).

It can be written as a sum of positive squares in 2 ways, for example, as 13987600 + 86452804 = 3740^2 + 9298^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100440401) 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, 205577 + ... + 206064.

It is an arithmetic number, because the mean of its divisors is an integer number (14887719).

Almost surely, 2^100440404 is an apocalyptic number.

It is an amenable number.

100440404 is a deficient number, since it is larger than the sum of its proper divisors (78212224).

100440404 is a wasteful number, since it uses less digits than its factorization.

100440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411706 (or 411704 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 100440404 is about 10021.9960087799. The cubic root of 100440404 is about 464.8392769394.

Adding to 100440404 its reverse (404044001), we get a palindrome (504484405).

The spelling of 100440404 in words is "one hundred million, four hundred forty thousand, four hundred four".