47447147 has 8 divisors (see below), whose sum is σ = 51853872. Its totient is φ = 43056000.

The previous prime is 47447129. The next prime is 47447149. The reversal of 47447147 is 74174474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47447147 - 2¹⁰ = 47446123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47447147.

It is not an unprimeable number, because it can be changed into a prime (47447149) 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, 3023 + ... + 10199.

It is an arithmetic number, because the mean of its divisors is an integer number (6481734).

Almost surely, 2^47447147 is an apocalyptic number.

47447147 is a deficient number, since it is larger than the sum of its proper divisors (4406725).

47447147 is a wasteful number, since it uses less digits than its factorization.

47447147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7789.

The product of its digits is 87808, while the sum is 38.

The square root of 47447147 is about 6888.1889492086. The cubic root of 47447147 is about 362.0234486200.

The spelling of 47447147 in words is "forty-seven million, four hundred forty-seven thousand, one hundred forty-seven".