3939351012 has 72 divisors (see below), whose sum is σ = 10236615480. Its totient is φ = 1276577280.

The previous prime is 3939351011. The next prime is 3939351029. The reversal of 3939351012 is 2101539393.

It can be written as a sum of positive squares in 4 ways, for example, as 106007616 + 3833343396 = 10296^2 + 61914^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3939351011) 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 23 ways as a sum of consecutive naturals, for example, 427914 + ... + 437022.

It is an arithmetic number, because the mean of its divisors is an integer number (142175215).

Almost surely, 2^3939351012 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 3939351012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5118307740).

3939351012 is an abundant number, since it is smaller than the sum of its proper divisors (6297264468).

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

3939351012 is a wasteful number, since it uses less digits than its factorization.

3939351012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453 (or 9448 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 3939351012 is about 62764.2494737251. The cubic root of 3939351012 is about 1579.3373031350.

The spelling of 3939351012 in words is "three billion, nine hundred thirty-nine million, three hundred fifty-one thousand, twelve".