39986481544 has 16 divisors (see below), whose sum is σ = 74980912320. Its totient is φ = 19991571600.

The previous prime is 39986481523. The next prime is 39986481553. The reversal of 39986481544 is 44518468993.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103732 + ... + 301219.

It is an arithmetic number, because the mean of its divisors is an integer number (4686307020).

Almost surely, 2^39986481544 is an apocalyptic number.

It is an amenable number.

39986481544 is a deficient number, since it is larger than the sum of its proper divisors (34994430776).

39986481544 is a wasteful number, since it uses less digits than its factorization.

39986481544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417300 (or 417296 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 61.

The spelling of 39986481544 in words is "thirty-nine billion, nine hundred eighty-six million, four hundred eighty-one thousand, five hundred forty-four".