491904701 has 2 divisors, whose sum is σ = 491904702. Its totient is φ = 491904700.

The previous prime is 491904667. The next prime is 491904761. The reversal of 491904701 is 107409194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282408025 + 209496676 = 16805^2 + 14474^2 .

It is a cyclic number.

It is not a de Polignac number, because 491904701 - 2²⁶ = 424795837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491904761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245952350 + 245952351.

It is an arithmetic number, because the mean of its divisors is an integer number (245952351).

Almost surely, 2^491904701 is an apocalyptic number.

It is an amenable number.

491904701 is a deficient number, since it is larger than the sum of its proper divisors (1).

491904701 is an equidigital number, since it uses as much as digits as its factorization.

491904701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 491904701 is about 22178.9247034206. The cubic root of 491904701 is about 789.3937029429.

The spelling of 491904701 in words is "four hundred ninety-one million, nine hundred four thousand, seven hundred one".