2947217 has 16 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 2305152.

The previous prime is 2947213. The next prime is 2947249. The reversal of 2947217 is 7127492.

2947217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2947217 - 2² = 2947213 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

Its product of digits (7056) is a multiple of the sum of its prime divisors (392).

It is not an unprimeable number, because it can be changed into a prime (2947211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12533 + ... + 12765.

It is an arithmetic number, because the mean of its divisors is an integer number (229320).

2^2947217 is an apocalyptic number.

It is an amenable number.

2947217 is a deficient number, since it is larger than the sum of its proper divisors (721903).

2947217 is a wasteful number, since it uses less digits than its factorization.

2947217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its digits is 7056, while the sum is 32.

The square root of 2947217 is about 1716.7460499445. The cubic root of 2947217 is about 143.3740999359.

The spelling of 2947217 in words is "two million, nine hundred forty-seven thousand, two hundred seventeen".