3979512747 has 20 divisors (see below), whose sum is σ = 6793948656. Its totient is φ = 2274006960.

The previous prime is 3979512743. The next prime is 3979512793. The reversal of 3979512747 is 7472159793.

3979512747 is a `hidden beast` number, since 397 + 95 + 127 + 47 = 666.

It is not a de Polignac number, because 3979512747 - 2² = 3979512743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3979512693 and 3979512702.

It is not an unprimeable number, because it can be changed into a prime (3979512743) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3508704 + ... + 3509837.

Almost surely, 2^3979512747 is an apocalyptic number.

3979512747 is a deficient number, since it is larger than the sum of its proper divisors (2814435909).

3979512747 is an equidigital number, since it uses as much as digits as its factorization.

3979512747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018560 (or 7018551 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 3979512747 is about 63083.3793245099. The cubic root of 3979512747 is about 1584.6862879275.

The spelling of 3979512747 in words is "three billion, nine hundred seventy-nine million, five hundred twelve thousand, seven hundred forty-seven".