3947276979 has 6 divisors (see below), whose sum is σ = 5701622316. Its totient is φ = 2631517980.

The previous prime is 3947276947. The next prime is 3947276981. The reversal of 3947276979 is 9796727493.

3947276979 is a `hidden beast` number, since 3 + 9 + 472 + 76 + 97 + 9 = 666.

It is not a de Polignac number, because 3947276979 - 2⁵ = 3947276947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3947276909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219293157 + ... + 219293174.

It is an arithmetic number, because the mean of its divisors is an integer number (950270386).

Almost surely, 2^3947276979 is an apocalyptic number.

3947276979 is a deficient number, since it is larger than the sum of its proper divisors (1754345337).

3947276979 is a wasteful number, since it uses less digits than its factorization.

3947276979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438586337 (or 438586334 counting only the distinct ones).

The product of its digits is 36006768, while the sum is 63.

The square root of 3947276979 is about 62827.3585231784. The cubic root of 3947276979 is about 1580.3958014708.

The spelling of 3947276979 in words is "three billion, nine hundred forty-seven million, two hundred seventy-six thousand, nine hundred seventy-nine".