3947017147 has 2 divisors, whose sum is σ = 3947017148. Its totient is φ = 3947017146.

The previous prime is 3947017121. The next prime is 3947017153. The reversal of 3947017147 is 7417107493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3947017147 - 2²³ = 3938628539 is a prime.

It is not a weakly prime, because it can be changed into another prime (3947017157) 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, 1973508573 + 1973508574.

It is an arithmetic number, because the mean of its divisors is an integer number (1973508574).

Almost surely, 2^3947017147 is an apocalyptic number.

3947017147 is a deficient number, since it is larger than the sum of its proper divisors (1).

3947017147 is an equidigital number, since it uses as much as digits as its factorization.

3947017147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 3947017147 is about 62825.2906638720. The cubic root of 3947017147 is about 1580.3611238593.

The spelling of 3947017147 in words is "three billion, nine hundred forty-seven million, seventeen thousand, one hundred forty-seven".