40400440044 has 24 divisors (see below), whose sum is σ = 94275158208. Its totient is φ = 13465746960.

The previous prime is 40400440019. The next prime is 40400440063. The reversal of 40400440044 is 44004400404.

40400440044 is a modest number, since divided by 440044 gives 404 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 40400439996 and 40400440023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32839 + ... + 286145.

It is an arithmetic number, because the mean of its divisors is an integer number (3928131592).

Almost surely, 2^40400440044 is an apocalyptic number.

It is an amenable number.

40400440044 is an abundant number, since it is smaller than the sum of its proper divisors (53874718164).

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

40400440044 is a wasteful number, since it uses less digits than its factorization.

40400440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266605 (or 266603 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40400440044 its reverse (44004400404), we get a palindrome (84404840448).

The spelling of 40400440044 in words is "forty billion, four hundred million, four hundred forty thousand, forty-four".