40440440800 has 72 divisors (see below), whose sum is σ = 100398652200. Its totient is φ = 15901985280.

The previous prime is 40440440683. The next prime is 40440440801. The reversal of 40440440800 is 804404404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440440801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381195 + ... + 475594.

It is an arithmetic number, because the mean of its divisors is an integer number (1394425725).

Almost surely, 2^40440440800 is an apocalyptic number.

40440440800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440440800 is an abundant number, since it is smaller than the sum of its proper divisors (59958211400).

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

40440440800 is a wasteful number, since it uses less digits than its factorization.

40440440800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856868 (or 856855 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The spelling of 40440440800 in words is "forty billion, four hundred forty million, four hundred forty thousand, eight hundred".