2840417 has 2 divisors, whose sum is σ = 2840418. Its totient is φ = 2840416.

The previous prime is 2840393. The next prime is 2840419. The reversal of 2840417 is 7140482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2531281 + 309136 = 1591^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840417 - 2⁶ = 2840353 is a prime.

Together with 2840419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2840419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420208 + 1420209.

It is an arithmetic number, because the mean of its divisors is an integer number (1420209).

2^2840417 is an apocalyptic number.

It is an amenable number.

2840417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840417 is an equidigital number, since it uses as much as digits as its factorization.

2840417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 2840417 is about 1685.3536720819. The cubic root of 2840417 is about 141.6209057890.

Adding to 2840417 its reverse (7140482), we get a palindrome (9980899).

The spelling of 2840417 in words is "two million, eight hundred forty thousand, four hundred seventeen".