3969512852 has 24 divisors (see below), whose sum is σ = 7437928680. Its totient is φ = 1847014400.

The previous prime is 3969512843. The next prime is 3969512863. The reversal of 3969512852 is 2582159693.

It can be written as a sum of positive squares in 4 ways, for example, as 757570576 + 3211942276 = 27524^2 + 56674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3969512852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321899 + ... + 334002.

It is an arithmetic number, because the mean of its divisors is an integer number (309913695).

Almost surely, 2^3969512852 is an apocalyptic number.

It is an amenable number.

3969512852 is a deficient number, since it is larger than the sum of its proper divisors (3468415828).

3969512852 is a wasteful number, since it uses less digits than its factorization.

3969512852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656011 (or 656009 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The square root of 3969512852 is about 63004.0701224929. The cubic root of 3969512852 is about 1583.3578180467.

The spelling of 3969512852 in words is "three billion, nine hundred sixty-nine million, five hundred twelve thousand, eight hundred fifty-two".