400334023044 has 72 divisors (see below), whose sum is σ = 1014274486680. Its totient is φ = 133139192832.

The previous prime is 400334023039. The next prime is 400334023087. The reversal of 400334023044 is 440320433004.

It can be written as a sum of positive squares in 4 ways, for example, as 9548100 + 400324474944 = 3090^2 + 632712^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400334022999 and 400334023017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34997694 + ... + 35009130.

Almost surely, 2^400334023044 is an apocalyptic number.

It is an amenable number.

400334023044 is an abundant number, since it is smaller than the sum of its proper divisors (613940463636).

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

400334023044 is a wasteful number, since it uses less digits than its factorization.

400334023044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13589 (or 13584 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 400334023044 its reverse (440320433004), we get a palindrome (840654456048).

The spelling of 400334023044 in words is "four hundred billion, three hundred thirty-four million, twenty-three thousand, forty-four".