47147643 has 8 divisors (see below), whose sum is σ = 69848400. Its totient is φ = 31431744.

The previous prime is 47147641. The next prime is 47147671. The reversal of 47147643 is 34674174.

It is a happy number.

47147643 is a `hidden beast` number, since 4 + 7 + 1 + 4 + 7 + 643 = 666.

It is not a de Polignac number, because 47147643 - 2¹ = 47147641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47147598 and 47147607.

It is not an unprimeable number, because it can be changed into a prime (47147641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873078 + ... + 873131.

It is an arithmetic number, because the mean of its divisors is an integer number (8731050).

Almost surely, 2^47147643 is an apocalyptic number.

47147643 is a deficient number, since it is larger than the sum of its proper divisors (22700757).

47147643 is a wasteful number, since it uses less digits than its factorization.

47147643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746218 (or 1746212 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 47147643 is about 6866.4141296604. The cubic root of 47147643 is about 361.2600980563.

The spelling of 47147643 in words is "forty-seven million, one hundred forty-seven thousand, six hundred forty-three".