3936976981 has 8 divisors (see below), whose sum is σ = 4591227200. Its totient is φ = 3374551404.

The previous prime is 3936976969. The next prime is 3936976993. The reversal of 3936976981 is 1896796393.

It is an interprime number because it is at equal distance from previous prime (3936976969) and next prime (3936976993).

It is not a de Polignac number, because 3936976981 - 2¹⁹ = 3936452693 is a prime.

It is a super-2 number, since 2×3936976981² = 30999575497847748722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3936976921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5738691 + ... + 5739376.

It is an arithmetic number, because the mean of its divisors is an integer number (573903400).

Almost surely, 2^3936976981 is an apocalyptic number.

It is an amenable number.

3936976981 is a deficient number, since it is larger than the sum of its proper divisors (654250219).

3936976981 is an equidigital number, since it uses as much as digits as its factorization.

3936976981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11478088 (or 11478074 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 61.

The square root of 3936976981 is about 62745.3343365066. The cubic root of 3936976981 is about 1579.0199793641.

The spelling of 3936976981 in words is "three billion, nine hundred thirty-six million, nine hundred seventy-six thousand, nine hundred eighty-one".