3947482547 has 2 divisors, whose sum is σ = 3947482548. Its totient is φ = 3947482546.

The previous prime is 3947482543. The next prime is 3947482549. The reversal of 3947482547 is 7452847493.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3947482547 - 2² = 3947482543 is a prime.

Together with 3947482549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3947482543) 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, 1973741273 + 1973741274.

It is an arithmetic number, because the mean of its divisors is an integer number (1973741274).

Almost surely, 2^3947482547 is an apocalyptic number.

3947482547 is a deficient number, since it is larger than the sum of its proper divisors (1).

3947482547 is an equidigital number, since it uses as much as digits as its factorization.

3947482547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 53.

The square root of 3947482547 is about 62828.9944770724. The cubic root of 3947482547 is about 1580.4232358402.

The spelling of 3947482547 in words is "three billion, nine hundred forty-seven million, four hundred eighty-two thousand, five hundred forty-seven".