491832427 has 2 divisors, whose sum is σ = 491832428. Its totient is φ = 491832426.

The previous prime is 491832403. The next prime is 491832479. The reversal of 491832427 is 724238194.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491832427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491832427.

It is not a weakly prime, because it can be changed into another prime (491832227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245916213 + 245916214.

It is an arithmetic number, because the mean of its divisors is an integer number (245916214).

Almost surely, 2^491832427 is an apocalyptic number.

491832427 is a deficient number, since it is larger than the sum of its proper divisors (1).

491832427 is an equidigital number, since it uses as much as digits as its factorization.

491832427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 491832427 is about 22177.2953039815. The cubic root of 491832427 is about 789.3550400103.

The spelling of 491832427 in words is "four hundred ninety-one million, eight hundred thirty-two thousand, four hundred twenty-seven".