3985443954 has 48 divisors (see below), whose sum is σ = 8773479000. Its totient is φ = 1307363328.

The previous prime is 3985443919. The next prime is 3985443961. The reversal of 3985443954 is 4593445893.

3985443954 is a `hidden beast` number, since 3 + 9 + 8 + 544 + 3 + 95 + 4 = 666.

3985443954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3371544225 + 613899729 = 58065^2 + 24777^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3985443954.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285522 + ... + 299154.

Almost surely, 2^3985443954 is an apocalyptic number.

3985443954 is an abundant number, since it is smaller than the sum of its proper divisors (4788035046).

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

3985443954 is a wasteful number, since it uses less digits than its factorization.

3985443954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899 (or 13896 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The square root of 3985443954 is about 63130.3726743316. The cubic root of 3985443954 is about 1585.4731880062.

The spelling of 3985443954 in words is "three billion, nine hundred eighty-five million, four hundred forty-three thousand, nine hundred fifty-four".