40442391008 has 24 divisors (see below), whose sum is σ = 79654972320. Its totient is φ = 20212556800.

The previous prime is 40442391001. The next prime is 40442391049. The reversal of 40442391008 is 80019324404.

40442391008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40442391001) 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, 193553 + ... + 344016.

It is an arithmetic number, because the mean of its divisors is an integer number (3318957180).

Almost surely, 2^40442391008 is an apocalyptic number.

It is an amenable number.

40442391008 is a deficient number, since it is larger than the sum of its proper divisors (39212581312).

40442391008 is a wasteful number, since it uses less digits than its factorization.

40442391008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539930 (or 539922 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 40442391008 in words is "forty billion, four hundred forty-two million, three hundred ninety-one thousand, eight".