3999610992 has 40 divisors (see below), whose sum is σ = 11127124624. Its totient is φ = 1230649344.

The previous prime is 3999610981. The next prime is 3999610999. The reversal of 3999610992 is 2990169993.

3999610992 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999610999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3204193 + ... + 3205440.

Almost surely, 2^3999610992 is an apocalyptic number.

It is an amenable number.

3999610992 is an abundant number, since it is smaller than the sum of its proper divisors (7127513632).

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

3999610992 is a wasteful number, since it uses less digits than its factorization.

3999610992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409657 (or 6409651 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 57.

The square root of 3999610992 is about 63242.4777503222. The cubic root of 3999610992 is about 1587.3495909909.

The spelling of 3999610992 in words is "three billion, nine hundred ninety-nine million, six hundred ten thousand, nine hundred ninety-two".