404404136 has 16 divisors (see below), whose sum is σ = 770689140. Its totient is φ = 198887040.

The previous prime is 404404127. The next prime is 404404157. The reversal of 404404136 is 631404404.

It can be written as a sum of positive squares in 2 ways, for example, as 321484900 + 82919236 = 17930^2 + 9106^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413861 + ... + 414836.

Almost surely, 2^404404136 is an apocalyptic number.

It is an amenable number.

404404136 is a deficient number, since it is larger than the sum of its proper divisors (366285004).

404404136 is a wasteful number, since it uses less digits than its factorization.

404404136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828764 (or 828760 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 404404136 is about 20109.8019880853. The cubic root of 404404136 is about 739.5005980347.

The spelling of 404404136 in words is "four hundred four million, four hundred four thousand, one hundred thirty-six".