491230032239 has 2 divisors, whose sum is σ = 491230032240. Its totient is φ = 491230032238.

The previous prime is 491230032193. The next prime is 491230032253. The reversal of 491230032239 is 932230032194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491230032239 - 2¹² = 491230028143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491230031239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245615016119 + 245615016120.

It is an arithmetic number, because the mean of its divisors is an integer number (245615016120).

Almost surely, 2^491230032239 is an apocalyptic number.

491230032239 is a deficient number, since it is larger than the sum of its proper divisors (1).

491230032239 is an equidigital number, since it uses as much as digits as its factorization.

491230032239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 491230032239 in words is "four hundred ninety-one billion, two hundred thirty million, thirty-two thousand, two hundred thirty-nine".