3907778960 has 40 divisors (see below), whose sum is σ = 9091128696. Its totient is φ = 1562158080.

The previous prime is 3907778929. The next prime is 3907778977. The reversal of 3907778960 is 698777093.

It can be written as a sum of positive squares in 4 ways, for example, as 4528384 + 3903250576 = 2128^2 + 62476^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3907778896 and 3907778905.

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, 125252 + ... + 153308.

Almost surely, 2^3907778960 is an apocalyptic number.

It is an amenable number.

3907778960 is an abundant number, since it is smaller than the sum of its proper divisors (5183349736).

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

3907778960 is a wasteful number, since it uses less digits than its factorization.

3907778960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29811 (or 29805 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 56.

The square root of 3907778960 is about 62512.2304833222. The cubic root of 3907778960 is about 1575.1067649134.

The spelling of 3907778960 in words is "three billion, nine hundred seven million, seven hundred seventy-eight thousand, nine hundred sixty".