40400444224 has 56 divisors (see below), whose sum is σ = 91641818240. Its totient is φ = 17310813696.

The previous prime is 40400444221. The next prime is 40400444233. The reversal of 40400444224 is 42244400404.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 40400444192 and 40400444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400444221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3868642 + ... + 3879070.

It is an arithmetic number, because the mean of its divisors is an integer number (1636461040).

Almost surely, 2^40400444224 is an apocalyptic number.

It is an amenable number.

40400444224 is an abundant number, since it is smaller than the sum of its proper divisors (51241374016).

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

40400444224 is a wasteful number, since it uses less digits than its factorization.

40400444224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19095 (or 19085 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40400444224 its reverse (42244400404), we get a palindrome (82644844628).

The spelling of 40400444224 in words is "forty billion, four hundred million, four hundred forty-four thousand, two hundred twenty-four".