400044332430 has 96 divisors (see below), whose sum is σ = 1048903229088. Its totient is φ = 105778483200.

The previous prime is 400044332419. The next prime is 400044332431. The reversal of 400044332430 is 34233440004.

It is a junction number, because it is equal to n+sod(n) for n = 400044332394 and 400044332403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400044332431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15278550 + ... + 15304710.

It is an arithmetic number, because the mean of its divisors is an integer number (10926075303).

Almost surely, 2^400044332430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400044332430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524451614544).

400044332430 is an abundant number, since it is smaller than the sum of its proper divisors (648858896658).

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

400044332430 is a wasteful number, since it uses less digits than its factorization.

400044332430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27602 (or 27599 counting only the distinct ones).

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

Adding to 400044332430 its reverse (34233440004), we get a palindrome (434277772434).

The spelling of 400044332430 in words is "four hundred billion, forty-four million, three hundred thirty-two thousand, four hundred thirty".