39943447907344 has 40 divisors (see below), whose sum is σ = 78091037746560. Its totient is φ = 19790993284608.

The previous prime is 39943447907329. The next prime is 39943447907347. The reversal of 39943447907344 is 44370974434993.

It is not an unprimeable number, because it can be changed into a prime (39943447907347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6756397 + ... + 11204275.

It is an arithmetic number, because the mean of its divisors is an integer number (1952275943664).

Almost surely, 2^{39943447907344} is an apocalyptic number.

It is an amenable number.

39943447907344 is a deficient number, since it is larger than the sum of its proper divisors (38147589839216).

39943447907344 is a wasteful number, since it uses less digits than its factorization.

39943447907344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452967 (or 4452961 counting only the distinct ones).

The product of its (nonzero) digits is 987614208, while the sum is 70.

The spelling of 39943447907344 in words is "thirty-nine trillion, nine hundred forty-three billion, four hundred forty-seven million, nine hundred seven thousand, three hundred forty-four".