3955729768 has 8 divisors (see below), whose sum is σ = 7416993330. Its totient is φ = 1977864880.

The previous prime is 3955729751. The next prime is 3955729777. The reversal of 3955729768 is 8679275593.

It can be written as a sum of positive squares in only one way, i.e., 3331829284 + 623900484 = 57722^2 + 24978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247233103 + ... + 247233118.

Almost surely, 2^3955729768 is an apocalyptic number.

It is an amenable number.

3955729768 is a deficient number, since it is larger than the sum of its proper divisors (3461263562).

3955729768 is a wasteful number, since it uses less digits than its factorization.

3955729768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494466227 (or 494466223 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 61.

The square root of 3955729768 is about 62894.5925179582. The cubic root of 3955729768 is about 1581.5230957268.

The spelling of 3955729768 in words is "three billion, nine hundred fifty-five million, seven hundred twenty-nine thousand, seven hundred sixty-eight".