400040404244 has 12 divisors (see below), whose sum is σ = 753922300404. Its totient is φ = 184634032704.

The previous prime is 400040404217. The next prime is 400040404249. The reversal of 400040404244 is 442404040004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84407680900 + 315632723344 = 290530^2 + 561812^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400040404249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3846542297 + ... + 3846542400.

It is an arithmetic number, because the mean of its divisors is an integer number (62826858367).

Almost surely, 2^400040404244 is an apocalyptic number.

It is an amenable number.

400040404244 is a deficient number, since it is larger than the sum of its proper divisors (353881896160).

400040404244 is a wasteful number, since it uses less digits than its factorization.

400040404244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7693084714 (or 7693084712 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 400040404244 its reverse (442404040004), we get a palindrome (842444444248).

The spelling of 400040404244 in words is "four hundred billion, forty million, four hundred four thousand, two hundred forty-four".