400244132344 has 32 divisors (see below), whose sum is σ = 857909455200. Its totient is φ = 171484508160.

The previous prime is 400244132339. The next prime is 400244132413. The reversal of 400244132344 is 443231442004.

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 7 ways as a sum of consecutive naturals, for example, 815017 + ... + 1210264.

It is an arithmetic number, because the mean of its divisors is an integer number (26809670475).

Almost surely, 2^400244132344 is an apocalyptic number.

It is an amenable number.

400244132344 is an abundant number, since it is smaller than the sum of its proper divisors (457665322856).

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

400244132344 is a wasteful number, since it uses less digits than its factorization.

400244132344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028823 (or 2028819 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 400244132344 its reverse (443231442004), we get a palindrome (843475574348).

The spelling of 400244132344 in words is "four hundred billion, two hundred forty-four million, one hundred thirty-two thousand, three hundred forty-four".