400204434344 has 72 divisors (see below), whose sum is σ = 893128610430. Its totient is φ = 167917875840.

The previous prime is 400204434341. The next prime is 400204434379. The reversal of 400204434344 is 443434402004.

It can be written as a sum of positive squares in 3 ways, for example, as 317714850244 + 82489584100 = 563662^2 + 287210^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400204434344.

It is not an unprimeable number, because it can be changed into a prime (400204434341) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1059587 + ... + 1386770.

Almost surely, 2^400204434344 is an apocalyptic number.

400204434344 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400204434344 is an abundant number, since it is smaller than the sum of its proper divisors (492924176086).

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

400204434344 is a wasteful number, since it uses less digits than its factorization.

400204434344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446411 (or 2446383 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 400204434344 its reverse (443434402004), we get a palindrome (843638836348).

The spelling of 400204434344 in words is "four hundred billion, two hundred four million, four hundred thirty-four thousand, three hundred forty-four".