491424827 has 2 divisors, whose sum is σ = 491424828. Its totient is φ = 491424826.

The previous prime is 491424779. The next prime is 491424839. The reversal of 491424827 is 728424194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491424827 - 2²⁰ = 490376251 is a prime.

It is not a weakly prime, because it can be changed into another prime (491424847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245712413 + 245712414.

It is an arithmetic number, because the mean of its divisors is an integer number (245712414).

Almost surely, 2^491424827 is an apocalyptic number.

491424827 is a deficient number, since it is larger than the sum of its proper divisors (1).

491424827 is an equidigital number, since it uses as much as digits as its factorization.

491424827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 491424827 is about 22168.1038205797. The cubic root of 491424827 is about 789.1369236918.

The spelling of 491424827 in words is "four hundred ninety-one million, four hundred twenty-four thousand, eight hundred twenty-seven".