40400400044 has 12 divisors (see below), whose sum is σ = 70708239168. Its totient is φ = 20198046000.

The previous prime is 40400400043. The next prime is 40400400077. The reversal of 40400400044 is 44000400404.

It is a junction number, because it is equal to n+sod(n) for n = 40400399989 and 40400400025.

It is not an unprimeable number, because it can be changed into a prime (40400400043) 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, 495932 + ... + 571619.

It is an arithmetic number, because the mean of its divisors is an integer number (5892353264).

Almost surely, 2^40400400044 is an apocalyptic number.

It is an amenable number.

40400400044 is a deficient number, since it is larger than the sum of its proper divisors (30307839124).

40400400044 is a wasteful number, since it uses less digits than its factorization.

40400400044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077016 (or 1077014 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40400400044 its reverse (44000400404), we get a palindrome (84400800448).

The spelling of 40400400044 in words is "forty billion, four hundred million, four hundred thousand, forty-four".