4091797 has 2 divisors, whose sum is σ = 4091798. Its totient is φ = 4091796.

The previous prime is 4091777. The next prime is 4091809. The reversal of 4091797 is 7971904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3437316 + 654481 = 1854^2 + 809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4091797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4091767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045898 + 2045899.

It is an arithmetic number, because the mean of its divisors is an integer number (2045899).

Almost surely, 2^4091797 is an apocalyptic number.

It is an amenable number.

4091797 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091797 is an equidigital number, since it uses as much as digits as its factorization.

4091797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 4091797 is about 2022.8190724828. The cubic root of 4091797 is about 159.9452547081.

It can be divided in two parts, 40917 and 97, that added together give a palindrome (41014).

The spelling of 4091797 in words is "four million, ninety-one thousand, seven hundred ninety-seven".