4149785947 has 2 divisors, whose sum is σ = 4149785948. Its totient is φ = 4149785946.

The previous prime is 4149785929. The next prime is 4149785987. The reversal of 4149785947 is 7495879414.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4149785947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4149785891 and 4149785900.

It is not a weakly prime, because it can be changed into another prime (4149785917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074892973 + 2074892974.

It is an arithmetic number, because the mean of its divisors is an integer number (2074892974).

Almost surely, 2^4149785947 is an apocalyptic number.

4149785947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4149785947 is an equidigital number, since it uses as much as digits as its factorization.

4149785947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The square root of 4149785947 is about 64418.8322387173. The cubic root of 4149785947 is about 1606.9729456382.

The spelling of 4149785947 in words is "four billion, one hundred forty-nine million, seven hundred eighty-five thousand, nine hundred forty-seven".