404404130 has 32 divisors (see below), whose sum is σ = 810961200. Its totient is φ = 144168192.

The previous prime is 404404127. The next prime is 404404157. The reversal of 404404130 is 31404404.

It can be written as a sum of positive squares in 8 ways, for example, as 11135569 + 393268561 = 3337^2 + 19831^2 .

It is a super-2 number, since 2×404404130² = 327085400722113800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49865 + ... + 57404.

Almost surely, 2^404404130 is an apocalyptic number.

404404130 is an abundant number, since it is smaller than the sum of its proper divisors (406557070).

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

404404130 is a wasteful number, since it uses less digits than its factorization.

404404130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107318.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 404404130 is about 20109.8018389043. The cubic root of 404404130 is about 739.5005943775.

Adding to 404404130 its reverse (31404404), we get a palindrome (435808534).

The spelling of 404404130 in words is "four hundred four million, four hundred four thousand, one hundred thirty".