2947429071847 has 4 divisors (see below), whose sum is σ = 3174154385080. Its totient is φ = 2720703758616.

The previous prime is 2947429071823. The next prime is 2947429071857. The reversal of 2947429071847 is 7481709247492.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2947429071847 - 2¹¹ = 2947429069799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947429071857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113362656597 + ... + 113362656622.

It is an arithmetic number, because the mean of its divisors is an integer number (793538596270).

Almost surely, 2^{2947429071847} is an apocalyptic number.

2947429071847 is a deficient number, since it is larger than the sum of its proper divisors (226725313233).

2947429071847 is a wasteful number, since it uses less digits than its factorization.

2947429071847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226725313232.

The product of its (nonzero) digits is 56899584, while the sum is 64.

The spelling of 2947429071847 in words is "two trillion, nine hundred forty-seven billion, four hundred twenty-nine million, seventy-one thousand, eight hundred forty-seven".