47705147 has 4 divisors (see below), whose sum is σ = 54520176. Its totient is φ = 40890120.

The previous prime is 47705131. The next prime is 47705149. The reversal of 47705147 is 74150774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74150774 = 2 ⋅37075387.

It is a cyclic number.

It is not a de Polignac number, because 47705147 - 2⁴ = 47705131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47705149) 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 3 ways as a sum of consecutive naturals, for example, 3407504 + ... + 3407517.

It is an arithmetic number, because the mean of its divisors is an integer number (13630044).

Almost surely, 2^47705147 is an apocalyptic number.

47705147 is a deficient number, since it is larger than the sum of its proper divisors (6815029).

47705147 is an equidigital number, since it uses as much as digits as its factorization.

47705147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6815028.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 47705147 is about 6906.8912688705. The cubic root of 47705147 is about 362.6784459519.

The spelling of 47705147 in words is "forty-seven million, seven hundred five thousand, one hundred forty-seven".