404400113 has 4 divisors (see below), whose sum is σ = 435507828. Its totient is φ = 373292400.

The previous prime is 404400089. The next prime is 404400119. The reversal of 404400113 is 311004404.

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 195077089 + 209323024 = 13967^2 + 14468^2 .

It is a de Polignac number, because none of the positive numbers 2^k-404400113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404400091 and 404400100.

It is not an unprimeable number, because it can be changed into a prime (404400119) 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, 15553838 + ... + 15553863.

It is an arithmetic number, because the mean of its divisors is an integer number (108876957).

Almost surely, 2^404400113 is an apocalyptic number.

It is an amenable number.

404400113 is a deficient number, since it is larger than the sum of its proper divisors (31107715).

404400113 is a wasteful number, since it uses less digits than its factorization.

404400113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31107714.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 404400113 is about 20109.7019619884. The cubic root of 404400113 is about 739.4981458501.

Adding to 404400113 its reverse (311004404), we get a palindrome (715404517).

The spelling of 404400113 in words is "four hundred four million, four hundred thousand, one hundred thirteen".