40400444004 has 72 divisors (see below), whose sum is σ = 97152427008. Its totient is φ = 13066600320.

The previous prime is 40400443991. The next prime is 40400444017. The reversal of 40400444004 is 40044400404.

It is an interprime number because it is at equal distance from previous prime (40400443991) and next prime (40400444017).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6288714 + ... + 6295134.

It is an arithmetic number, because the mean of its divisors is an integer number (1349339264).

Almost surely, 2^40400444004 is an apocalyptic number.

It is an amenable number.

40400444004 is an abundant number, since it is smaller than the sum of its proper divisors (56751983004).

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

40400444004 is a wasteful number, since it uses less digits than its factorization.

40400444004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885 (or 6846 counting only the distinct ones).

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

Adding to 40400444004 its reverse (40044400404), we get a palindrome (80444844408).

The spelling of 40400444004 in words is "forty billion, four hundred million, four hundred forty-four thousand, four".