404244004420 has 12 divisors (see below), whose sum is σ = 848912409324. Its totient is φ = 161697601760.

The previous prime is 404244004399. The next prime is 404244004433. The reversal of 404244004420 is 24400442404.

It can be written as a sum of positive squares in 2 ways, for example, as 311283653184 + 92960351236 = 557928^2 + 304894^2 .

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, 10106100091 + ... + 10106100130.

It is an arithmetic number, because the mean of its divisors is an integer number (70742700777).

Almost surely, 2^404244004420 is an apocalyptic number.

It is an amenable number.

404244004420 is an abundant number, since it is smaller than the sum of its proper divisors (444668404904).

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

404244004420 is a wasteful number, since it uses less digits than its factorization.

404244004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20212200230 (or 20212200228 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 404244004420 its reverse (24400442404), we get a palindrome (428644446824).

The spelling of 404244004420 in words is "four hundred four billion, two hundred forty-four million, four thousand, four hundred twenty".