3938907888 has 240 divisors, whose sum is σ = 11986509600. Its totient is φ = 1202995200.

The previous prime is 3938907851. The next prime is 3938907899. The reversal of 3938907888 is 8887098393.

It is a super-3 number, since 3×3938907888³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 22004983 + ... + 22005161.

It is an arithmetic number, because the mean of its divisors is an integer number (49943790).

Almost surely, 2^3938907888 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 3938907888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5993254800).

3938907888 is an abundant number, since it is smaller than the sum of its proper divisors (8047601712).

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

3938907888 is a wasteful number, since it uses less digits than its factorization.

3938907888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The square root of 3938907888 is about 62760.7193075414. The cubic root of 3938907888 is about 1579.2780828469.

The spelling of 3938907888 in words is "three billion, nine hundred thirty-eight million, nine hundred seven thousand, eight hundred eighty-eight".