39066987904 has 128 divisors (see below), whose sum is σ = 94385088000. Its totient is φ = 15723700224.

The previous prime is 39066987881. The next prime is 39066987907. The reversal of 39066987904 is 40978966093.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39066987907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7659147 + ... + 7664245.

It is an arithmetic number, because the mean of its divisors is an integer number (737383500).

Almost surely, 2^39066987904 is an apocalyptic number.

39066987904 is a gapful number since it is divisible by the number (34) 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 39066987904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47192544000).

39066987904 is an abundant number, since it is smaller than the sum of its proper divisors (55318100096).

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

39066987904 is a wasteful number, since it uses less digits than its factorization.

39066987904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640 (or 5628 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 39066987904 in words is "thirty-nine billion, sixty-six million, nine hundred eighty-seven thousand, nine hundred four".