3994994992 has 40 divisors (see below), whose sum is σ = 8158339440. Its totient is φ = 1892217600.

The previous prime is 3994994989. The next prime is 3994995029. The reversal of 3994994992 is 2994994993.

3994994992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3994994992² = 31919969972210160128, which contains 22 as substring.

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, 56634 + ... + 105817.

It is an arithmetic number, because the mean of its divisors is an integer number (203958486).

Almost surely, 2^3994994992 is an apocalyptic number.

It is an amenable number.

3994994992 is an abundant number, since it is smaller than the sum of its proper divisors (4163344448).

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

3994994992 is a wasteful number, since it uses less digits than its factorization.

3994994992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162541 (or 162535 counting only the distinct ones).

The product of its digits is 51018336, while the sum is 67.

The square root of 3994994992 is about 63205.9727557452. The cubic root of 3994994992 is about 1586.7386960529.

Subtracting from 3994994992 its reverse (2994994993), we obtain a palindrome (999999999).

The spelling of 3994994992 in words is "three billion, nine hundred ninety-four million, nine hundred ninety-four thousand, nine hundred ninety-two".