494949491 has 2 divisors, whose sum is σ = 494949492. Its totient is φ = 494949490.

The previous prime is 494949421. The next prime is 494949517. The reversal of 494949491 is 194949494.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494949491 is a prime.

It is a super-3 number, since 3×494949491³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (494949421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247474745 + 247474746.

It is an arithmetic number, because the mean of its divisors is an integer number (247474746).

Almost surely, 2^494949491 is an apocalyptic number.

494949491 is a deficient number, since it is larger than the sum of its proper divisors (1).

494949491 is an equidigital number, since it uses as much as digits as its factorization.

494949491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 53.

The square root of 494949491 is about 22247.4603269677. The cubic root of 494949491 is about 791.0190827466.

It can be divided in two parts, 49494 and 9491, that added together give a palindrome (58985).

The spelling of 494949491 in words is "four hundred ninety-four million, nine hundred forty-nine thousand, four hundred ninety-one".