3955906847 has 2 divisors, whose sum is σ = 3955906848. Its totient is φ = 3955906846.

The previous prime is 3955906813. The next prime is 3955906901. The reversal of 3955906847 is 7486095593.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3955906847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3955906792 and 3955906801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3955906247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977953423 + 1977953424.

It is an arithmetic number, because the mean of its divisors is an integer number (1977953424).

Almost surely, 2^3955906847 is an apocalyptic number.

3955906847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3955906847 is an equidigital number, since it uses as much as digits as its factorization.

3955906847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The square root of 3955906847 is about 62896.0002464386. Note that the first 3 decimals coincide. The cubic root of 3955906847 is about 1581.5466944360.

The spelling of 3955906847 in words is "three billion, nine hundred fifty-five million, nine hundred six thousand, eight hundred forty-seven".