4197272491 has 2 divisors, whose sum is σ = 4197272492. Its totient is φ = 4197272490.

The previous prime is 4197272413. The next prime is 4197272503. The reversal of 4197272491 is 1942727914.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4197272491 - 2⁷ = 4197272363 is a prime.

It is not a weakly prime, because it can be changed into another prime (4197272591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2098636245 + 2098636246.

It is an arithmetic number, because the mean of its divisors is an integer number (2098636246).

Almost surely, 2^4197272491 is an apocalyptic number.

4197272491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4197272491 is an equidigital number, since it uses as much as digits as its factorization.

4197272491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 4197272491 is about 64786.3603777832. The cubic root of 4197272491 is about 1613.0793131595.

The spelling of 4197272491 in words is "four billion, one hundred ninety-seven million, two hundred seventy-two thousand, four hundred ninety-one".