39936904832 has 128 divisors (see below), whose sum is σ = 92191582080. Its totient is φ = 17031168000.

The previous prime is 39936904811. The next prime is 39936904867. The reversal of 39936904832 is 23840963993.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8063957 + ... + 8068907.

It is an arithmetic number, because the mean of its divisors is an integer number (720246735).

Almost surely, 2^39936904832 is an apocalyptic number.

39936904832 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39936904832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46095791040).

39936904832 is an abundant number, since it is smaller than the sum of its proper divisors (52254677248).

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

39936904832 is a wasteful number, since it uses less digits than its factorization.

39936904832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 56.

The spelling of 39936904832 in words is "thirty-nine billion, nine hundred thirty-six million, nine hundred four thousand, eight hundred thirty-two".