404143444340 has 12 divisors (see below), whose sum is σ = 848701233156. Its totient is φ = 161657377728.

The previous prime is 404143444319. The next prime is 404143444351. The reversal of 404143444340 is 43444341404.

It can be written as a sum of positive squares in 2 ways, for example, as 138757740004 + 265385704336 = 372502^2 + 515156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 404143444340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10103586089 + ... + 10103586128.

It is an arithmetic number, because the mean of its divisors is an integer number (70725102763).

Almost surely, 2^404143444340 is an apocalyptic number.

It is an amenable number.

404143444340 is an abundant number, since it is smaller than the sum of its proper divisors (444557788816).

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

404143444340 is a wasteful number, since it uses less digits than its factorization.

404143444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20207172226 (or 20207172224 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 404143444340 its reverse (43444341404), we get a palindrome (447587785744).

The spelling of 404143444340 in words is "four hundred four billion, one hundred forty-three million, four hundred forty-four thousand, three hundred forty".