220440404 has 12 divisors (see below), whose sum is σ = 386000244. Its totient is φ = 110154624.

The previous prime is 220440391. The next prime is 220440419. The reversal of 220440404 is 404044022.

220440404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 36024004 + 184416400 = 6002^2 + 13580^2 .

It is a congruent number.

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, 8399 + ... + 22614.

It is an arithmetic number, because the mean of its divisors is an integer number (32166687).

Almost surely, 2^220440404 is an apocalyptic number.

It is an amenable number.

220440404 is a deficient number, since it is larger than the sum of its proper divisors (165559840).

220440404 is a wasteful number, since it uses less digits than its factorization.

220440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32794 (or 32792 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 220440404 is about 14847.2355676065. The cubic root of 220440404 is about 604.0836287578.

Adding to 220440404 its reverse (404044022), we get a palindrome (624484426).

The spelling of 220440404 in words is "two hundred twenty million, four hundred forty thousand, four hundred four".