3939990880 has 192 divisors, whose sum is σ = 11281600512. Its totient is φ = 1271531520.

The previous prime is 3939990877. The next prime is 3939990881. The reversal of 3939990880 is 880999393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939990881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1283107 + ... + 1286173.

It is an arithmetic number, because the mean of its divisors is an integer number (58758336).

Almost surely, 2^3939990880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3939990880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5640800256).

3939990880 is an abundant number, since it is smaller than the sum of its proper divisors (7341609632).

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

3939990880 is a wasteful number, since it uses less digits than its factorization.

3939990880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3149 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 58.

The square root of 3939990880 is about 62769.3466590182. The cubic root of 3939990880 is about 1579.4228089868.

The spelling of 3939990880 in words is "three billion, nine hundred thirty-nine million, nine hundred ninety thousand, eight hundred eighty".