491244463 has 2 divisors, whose sum is σ = 491244464. Its totient is φ = 491244462.

The previous prime is 491244437. The next prime is 491244473. The reversal of 491244463 is 364442194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491244463 - 2¹³ = 491236271 is a prime.

It is a super-3 number, since 3×491244463³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491244473) 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, 245622231 + 245622232.

It is an arithmetic number, because the mean of its divisors is an integer number (245622232).

Almost surely, 2^491244463 is an apocalyptic number.

491244463 is a deficient number, since it is larger than the sum of its proper divisors (1).

491244463 is an equidigital number, since it uses as much as digits as its factorization.

491244463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 37.

The square root of 491244463 is about 22164.0353500891. The cubic root of 491244463 is about 789.0403681925.

The spelling of 491244463 in words is "four hundred ninety-one million, two hundred forty-four thousand, four hundred sixty-three".