3909939852 has 192 divisors, whose sum is σ = 12202803200. Its totient is φ = 945250560.

The previous prime is 3909939851. The next prime is 3909939863. The reversal of 3909939852 is 2589399093.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 3909939792 and 3909939801.

It is not an unprimeable number, because it can be changed into a prime (3909939851) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 640149 + ... + 646227.

Almost surely, 2^3909939852 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 3909939852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6101401600).

3909939852 is an abundant number, since it is smaller than the sum of its proper divisors (8292863348).

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

3909939852 is a wasteful number, since it uses less digits than its factorization.

3909939852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156 (or 6154 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 57.

The square root of 3909939852 is about 62529.5118484064. The cubic root of 3909939852 is about 1575.3970413477.

The spelling of 3909939852 in words is "three billion, nine hundred nine million, nine hundred thirty-nine thousand, eight hundred fifty-two".