494642971 has 2 divisors, whose sum is σ = 494642972. Its totient is φ = 494642970.

The previous prime is 494642969. The next prime is 494642989. The reversal of 494642971 is 179246494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494642971 - 2¹ = 494642969 is a prime.

Together with 494642969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (494642171) 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, 247321485 + 247321486.

It is an arithmetic number, because the mean of its divisors is an integer number (247321486).

Almost surely, 2^494642971 is an apocalyptic number.

494642971 is a deficient number, since it is larger than the sum of its proper divisors (1).

494642971 is an equidigital number, since it uses as much as digits as its factorization.

494642971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 494642971 is about 22240.5703838728. The cubic root of 494642971 is about 790.8557575029.

The spelling of 494642971 in words is "four hundred ninety-four million, six hundred forty-two thousand, nine hundred seventy-one".