200404404 has 36 divisors (see below), whose sum is σ = 509991300. Its totient is φ = 66351360.

The previous prime is 200404403. The next prime is 200404417. The reversal of 200404404 is 404404002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76527504 + 123876900 = 8748^2 + 11130^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 (200404403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13317 + ... + 24044.

It is an arithmetic number, because the mean of its divisors is an integer number (14166425).

Almost surely, 2^200404404 is an apocalyptic number.

It is an amenable number.

200404404 is an abundant number, since it is smaller than the sum of its proper divisors (309586896).

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

200404404 is a wasteful number, since it uses less digits than its factorization.

200404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37520 (or 37515 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 200404404 is about 14156.4262439360. The cubic root of 200404404 is about 585.1974437629.

Adding to 200404404 its reverse (404404002), we get a palindrome (604808406).

The spelling of 200404404 in words is "two hundred million, four hundred four thousand, four hundred four".