4391617 has 2 divisors, whose sum is σ = 4391618. Its totient is φ = 4391616.

The previous prime is 4391609. The next prime is 4391657. The reversal of 4391617 is 7161934.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3101121 + 1290496 = 1761^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 4391617 - 2³ = 4391609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4391657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2195808 + 2195809.

It is an arithmetic number, because the mean of its divisors is an integer number (2195809).

Almost surely, 2^4391617 is an apocalyptic number.

It is an amenable number.

4391617 is a deficient number, since it is larger than the sum of its proper divisors (1).

4391617 is an equidigital number, since it uses as much as digits as its factorization.

4391617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 4391617 is about 2095.6185244457. The cubic root of 4391617 is about 163.7601217448.

The spelling of 4391617 in words is "four million, three hundred ninety-one thousand, six hundred seventeen".