491288359 has 2 divisors, whose sum is σ = 491288360. Its totient is φ = 491288358.

The previous prime is 491288353. The next prime is 491288387. The reversal of 491288359 is 953882194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491288359 - 2³ = 491288351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491288351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245644179 + 245644180.

It is an arithmetic number, because the mean of its divisors is an integer number (245644180).

Almost surely, 2^491288359 is an apocalyptic number.

491288359 is a deficient number, since it is larger than the sum of its proper divisors (1).

491288359 is an equidigital number, since it uses as much as digits as its factorization.

491288359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The square root of 491288359 is about 22165.0255808560. The cubic root of 491288359 is about 789.0638695155.

The spelling of 491288359 in words is "four hundred ninety-one million, two hundred eighty-eight thousand, three hundred fifty-nine".