491379227 has 2 divisors, whose sum is σ = 491379228. Its totient is φ = 491379226.

The previous prime is 491379211. The next prime is 491379253. The reversal of 491379227 is 722973194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491379227 - 2⁴ = 491379211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (491373227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245689613 + 245689614.

It is an arithmetic number, because the mean of its divisors is an integer number (245689614).

Almost surely, 2^491379227 is an apocalyptic number.

491379227 is a deficient number, since it is larger than the sum of its proper divisors (1).

491379227 is an equidigital number, since it uses as much as digits as its factorization.

491379227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 491379227 is about 22167.0752919730. The cubic root of 491379227 is about 789.1125145623.

The spelling of 491379227 in words is "four hundred ninety-one million, three hundred seventy-nine thousand, two hundred twenty-seven".