3977736736 has 24 divisors (see below), whose sum is σ = 7850920140. Its totient is φ = 1983852288.

The previous prime is 3977736733. The next prime is 3977736757. The reversal of 3977736736 is 6376377793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3642846736 + 334890000 = 60356^2 + 18300^2 .

It is not an unprimeable number, because it can be changed into a prime (3977736733) 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, 143851 + ... + 169258.

Almost surely, 2^3977736736 is an apocalyptic number.

It is an amenable number.

3977736736 is a deficient number, since it is larger than the sum of its proper divisors (3873183404).

3977736736 is a wasteful number, since it uses less digits than its factorization.

3977736736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313516 (or 313508 counting only the distinct ones).

The product of its digits is 21003948, while the sum is 58.

The square root of 3977736736 is about 63069.3010584389. The cubic root of 3977736736 is about 1584.4505103971.

The spelling of 3977736736 in words is "three billion, nine hundred seventy-seven million, seven hundred thirty-six thousand, seven hundred thirty-six".