4047478217 has 4 divisors (see below), whose sum is σ = 4058507136. Its totient is φ = 4036449300.

The previous prime is 4047478129. The next prime is 4047478223. The reversal of 4047478217 is 7128747404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4047478217 - 2⁸ = 4047477961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4047478247) 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, 5513909 + ... + 5514642.

It is an arithmetic number, because the mean of its divisors is an integer number (1014626784).

Almost surely, 2^4047478217 is an apocalyptic number.

It is an amenable number.

4047478217 is a deficient number, since it is larger than the sum of its proper divisors (11028919).

4047478217 is a wasteful number, since it uses less digits than its factorization.

4047478217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11028918.

The product of its (nonzero) digits is 351232, while the sum is 44.

The square root of 4047478217 is about 63619.7942231818. The cubic root of 4047478217 is about 1593.6569462789.

The spelling of 4047478217 in words is "four billion, forty-seven million, four hundred seventy-eight thousand, two hundred seventeen".