39881897088 has 64 divisors (see below), whose sum is σ = 115566873120. Its totient is φ = 12085422080.

The previous prime is 39881897071. The next prime is 39881897089. The reversal of 39881897088 is 88079818893.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (39881897089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4716645 + ... + 4725092.

Almost surely, 2^39881897088 is an apocalyptic number.

It is an amenable number.

39881897088 is an abundant number, since it is smaller than the sum of its proper divisors (75684976032).

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

39881897088 is a wasteful number, since it uses less digits than its factorization.

39881897088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441765 (or 9441753 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 69.

The spelling of 39881897088 in words is "thirty-nine billion, eight hundred eighty-one million, eight hundred ninety-seven thousand, eighty-eight".