3939343568 has 40 divisors (see below), whose sum is σ = 8087488320. Its totient is φ = 1853625600.

The previous prime is 3939343567. The next prime is 3939343571. The reversal of 3939343568 is 8653439393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939343567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2996 + ... + 88812.

It is an arithmetic number, because the mean of its divisors is an integer number (202187208).

Almost surely, 2^3939343568 is an apocalyptic number.

3939343568 is a gapful number since it is divisible by the number (38) 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 3939343568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4043744160).

3939343568 is an abundant number, since it is smaller than the sum of its proper divisors (4148144752).

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

3939343568 is a wasteful number, since it uses less digits than its factorization.

3939343568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85995 (or 85989 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 53.

The square root of 3939343568 is about 62764.1901724224. The cubic root of 3939343568 is about 1579.3363083354.

The spelling of 3939343568 in words is "three billion, nine hundred thirty-nine million, three hundred forty-three thousand, five hundred sixty-eight".