3977445537 has 12 divisors (see below), whose sum is σ = 6187137684. Its totient is φ = 2447658720.

The previous prime is 3977445487. The next prime is 3977445539. The reversal of 3977445537 is 7355447793.

3977445537 is a `hidden beast` number, since 3 + 97 + 74 + 455 + 37 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1665374481 + 2312071056 = 40809^2 + 48084^2 .

It is not a de Polignac number, because 3977445537 - 2¹⁴ = 3977429153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3977445539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16997514 + ... + 16997747.

It is an arithmetic number, because the mean of its divisors is an integer number (515594807).

Almost surely, 2^3977445537 is an apocalyptic number.

It is an amenable number.

3977445537 is a deficient number, since it is larger than the sum of its proper divisors (2209692147).

3977445537 is a wasteful number, since it uses less digits than its factorization.

3977445537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33995280 (or 33995277 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 54.

The square root of 3977445537 is about 63066.9924524707. The cubic root of 3977445537 is about 1584.4118450542.

The spelling of 3977445537 in words is "three billion, nine hundred seventy-seven million, four hundred forty-five thousand, five hundred thirty-seven".