3977566141 has 4 divisors (see below), whose sum is σ = 4016183392. Its totient is φ = 3938948892.

The previous prime is 3977566121. The next prime is 3977566163. The reversal of 3977566141 is 1416657793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3977566141 - 2⁷ = 3977566013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977566121) 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, 19308471 + ... + 19308676.

It is an arithmetic number, because the mean of its divisors is an integer number (1004045848).

Almost surely, 2^3977566141 is an apocalyptic number.

It is an amenable number.

3977566141 is a deficient number, since it is larger than the sum of its proper divisors (38617251).

3977566141 is a wasteful number, since it uses less digits than its factorization.

3977566141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38617250.

The product of its digits is 952560, while the sum is 49.

The square root of 3977566141 is about 63067.9486030741. The cubic root of 3977566141 is about 1584.4278590573.

The spelling of 3977566141 in words is "three billion, nine hundred seventy-seven million, five hundred sixty-six thousand, one hundred forty-one".