3969519860 has 48 divisors (see below), whose sum is σ = 8750681856. Its totient is φ = 1509649152.

The previous prime is 3969519847. The next prime is 3969519871. The reversal of 3969519860 is 689159693.

It is a junction number, because it is equal to n+sod(n) for n = 3969519796 and 3969519805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50984 + ... + 102656.

It is an arithmetic number, because the mean of its divisors is an integer number (182305872).

Almost surely, 2^3969519860 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 3969519860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4375340928).

3969519860 is an abundant number, since it is smaller than the sum of its proper divisors (4781161996).

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

3969519860 is a wasteful number, since it uses less digits than its factorization.

3969519860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51872 (or 51870 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 3969519860 is about 63004.1257379229. The cubic root of 3969519860 is about 1583.3587498290.

The spelling of 3969519860 in words is "three billion, nine hundred sixty-nine million, five hundred nineteen thousand, eight hundred sixty".