3129996847 has 2 divisors, whose sum is σ = 3129996848. Its totient is φ = 3129996846.

The previous prime is 3129996839. The next prime is 3129996853. The reversal of 3129996847 is 7486999213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3129996847 - 2³ = 3129996839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3129996791 and 3129996800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3129996887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564998423 + 1564998424.

It is an arithmetic number, because the mean of its divisors is an integer number (1564998424).

Almost surely, 2^3129996847 is an apocalyptic number.

3129996847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129996847 is an equidigital number, since it uses as much as digits as its factorization.

3129996847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 58.

The square root of 3129996847 is about 55946.3747440350. The cubic root of 3129996847 is about 1462.7877004997.

The spelling of 3129996847 in words is "three billion, one hundred twenty-nine million, nine hundred ninety-six thousand, eight hundred forty-seven".