3116947729 has 4 divisors (see below), whose sum is σ = 3562225984. Its totient is φ = 2671669476.

The previous prime is 3116947709. The next prime is 3116947829. The reversal of 3116947729 is 9277496113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3116947729 - 2⁵ = 3116947697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3116947709) 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, 222639117 + ... + 222639130.

It is an arithmetic number, because the mean of its divisors is an integer number (890556496).

Almost surely, 2^3116947729 is an apocalyptic number.

It is an amenable number.

3116947729 is a deficient number, since it is larger than the sum of its proper divisors (445278255).

3116947729 is an equidigital number, since it uses as much as digits as its factorization.

3116947729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445278254.

The product of its digits is 571536, while the sum is 49.

The square root of 3116947729 is about 55829.6312812471. The cubic root of 3116947729 is about 1460.7520565607.

The spelling of 3116947729 in words is "three billion, one hundred sixteen million, nine hundred forty-seven thousand, seven hundred twenty-nine".