3977640968 has 16 divisors (see below), whose sum is σ = 8523516480. Its totient is φ = 1704703248.

The previous prime is 3977640967. The next prime is 3977640991. The reversal of 3977640968 is 8690467793.

3977640968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3977640967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35514596 + ... + 35514707.

It is an arithmetic number, because the mean of its divisors is an integer number (532719780).

Almost surely, 2^3977640968 is an apocalyptic number.

It is an amenable number.

3977640968 is an abundant number, since it is smaller than the sum of its proper divisors (4545875512).

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

3977640968 is a wasteful number, since it uses less digits than its factorization.

3977640968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71029316 (or 71029312 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 59.

The square root of 3977640968 is about 63068.5418255409. The cubic root of 3977640968 is about 1584.4377945501.

The spelling of 3977640968 in words is "three billion, nine hundred seventy-seven million, six hundred forty thousand, nine hundred sixty-eight".