2117447 has 2 divisors, whose sum is σ = 2117448. Its totient is φ = 2117446.

The previous prime is 2117441. The next prime is 2117461. The reversal of 2117447 is 7447112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2117447 - 2⁴ = 2117431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2117441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058723 + 1058724.

It is an arithmetic number, because the mean of its divisors is an integer number (1058724).

2^2117447 is an apocalyptic number.

2117447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117447 is an equidigital number, since it uses as much as digits as its factorization.

2117447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1568, while the sum is 26.

The square root of 2117447 is about 1455.1450099561. The cubic root of 2117447 is about 128.4115780038.

The spelling of 2117447 in words is "two million, one hundred seventeen thousand, four hundred forty-seven".