4197091 has 2 divisors, whose sum is σ = 4197092. Its totient is φ = 4197090.

The previous prime is 4197031. The next prime is 4197097. The reversal of 4197091 is 1907914.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4197091 - 2¹⁹ = 3672803 is a prime.

It is not a weakly prime, because it can be changed into another prime (4197097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2098545 + 2098546.

It is an arithmetic number, because the mean of its divisors is an integer number (2098546).

Almost surely, 2^4197091 is an apocalyptic number.

4197091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4197091 is an equidigital number, since it uses as much as digits as its factorization.

4197091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 4197091 is about 2048.6803069293. The cubic root of 4197091 is about 161.3056062854.

The spelling of 4197091 in words is "four million, one hundred ninety-seven thousand, ninety-one".