494439643 has 2 divisors, whose sum is σ = 494439644. Its totient is φ = 494439642.

The previous prime is 494439637. The next prime is 494439667. The reversal of 494439643 is 346934494.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494439643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 494439593 and 494439602.

It is not a weakly prime, because it can be changed into another prime (494436643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247219821 + 247219822.

It is an arithmetic number, because the mean of its divisors is an integer number (247219822).

Almost surely, 2^494439643 is an apocalyptic number.

494439643 is a deficient number, since it is larger than the sum of its proper divisors (1).

494439643 is an equidigital number, since it uses as much as digits as its factorization.

494439643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 46.

The square root of 494439643 is about 22235.9988082389. The cubic root of 494439643 is about 790.7473795636.

The spelling of 494439643 in words is "four hundred ninety-four million, four hundred thirty-nine thousand, six hundred forty-three".