47305947 has 8 divisors (see below), whose sum is σ = 67926544. Its totient is φ = 29111328.

The previous prime is 47305939. The next prime is 47305949. The reversal of 47305947 is 74950374.

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

It is not a de Polignac number, because 47305947 - 2³ = 47305939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1212973 = 47305947 / (4 + 7 + 3 + 0 + 5 + 9 + 4 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47305949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606448 + ... + 606525.

It is an arithmetic number, because the mean of its divisors is an integer number (8490818).

Almost surely, 2^47305947 is an apocalyptic number.

47305947 is a deficient number, since it is larger than the sum of its proper divisors (20620597).

47305947 is a wasteful number, since it uses less digits than its factorization.

47305947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212989.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 47305947 is about 6877.9318839314. The cubic root of 47305947 is about 361.6639714193.

The spelling of 47305947 in words is "forty-seven million, three hundred five thousand, nine hundred forty-seven".