3999051632 has 20 divisors (see below), whose sum is σ = 7823390640. Its totient is φ = 1980112128.

The previous prime is 3999051631. The next prime is 3999051659. The reversal of 3999051632 is 2361509993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999051631) 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 3 ways as a sum of consecutive naturals, for example, 1211657 + ... + 1214952.

It is an arithmetic number, because the mean of its divisors is an integer number (391169532).

Almost surely, 2^3999051632 is an apocalyptic number.

It is an amenable number.

3999051632 is a deficient number, since it is larger than the sum of its proper divisors (3824339008).

3999051632 is a wasteful number, since it uses less digits than its factorization.

3999051632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426720 (or 2426714 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 3999051632 is about 63238.0552515651. The cubic root of 3999051632 is about 1587.2755886888.

The spelling of 3999051632 in words is "three billion, nine hundred ninety-nine million, fifty-one thousand, six hundred thirty-two".