491113429439 has 2 divisors, whose sum is σ = 491113429440. Its totient is φ = 491113429438.

The previous prime is 491113429399. The next prime is 491113429451. The reversal of 491113429439 is 934924311194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491113429439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491113429039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245556714719 + 245556714720.

It is an arithmetic number, because the mean of its divisors is an integer number (245556714720).

Almost surely, 2^491113429439 is an apocalyptic number.

491113429439 is a deficient number, since it is larger than the sum of its proper divisors (1).

491113429439 is an equidigital number, since it uses as much as digits as its factorization.

491113429439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The spelling of 491113429439 in words is "four hundred ninety-one billion, one hundred thirteen million, four hundred twenty-nine thousand, four hundred thirty-nine".