39964159744 has 36 divisors (see below), whose sum is σ = 79883526240. Its totient is φ = 19954196480.

The previous prime is 39964159673. The next prime is 39964159747. The reversal of 39964159744 is 44795146993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39964159747) 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, 75504 + ... + 292624.

It is an arithmetic number, because the mean of its divisors is an integer number (2218986840).

Almost surely, 2^39964159744 is an apocalyptic number.

It is an amenable number.

39964159744 is a deficient number, since it is larger than the sum of its proper divisors (39919366496).

39964159744 is an equidigital number, since it uses as much as digits as its factorization.

39964159744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217856 (or 217842 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 61.

The spelling of 39964159744 in words is "thirty-nine billion, nine hundred sixty-four million, one hundred fifty-nine thousand, seven hundred forty-four".