494774939 has 2 divisors, whose sum is σ = 494774940. Its totient is φ = 494774938.

The previous prime is 494774933. The next prime is 494774971. The reversal of 494774939 is 939477494.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494774939 is a prime.

It is not a weakly prime, because it can be changed into another prime (494774933) 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, 247387469 + 247387470.

It is an arithmetic number, because the mean of its divisors is an integer number (247387470).

Almost surely, 2^494774939 is an apocalyptic number.

494774939 is a deficient number, since it is larger than the sum of its proper divisors (1).

494774939 is an equidigital number, since it uses as much as digits as its factorization.

494774939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 56.

The square root of 494774939 is about 22243.5370164010. The cubic root of 494774939 is about 790.9260832251.

The spelling of 494774939 in words is "four hundred ninety-four million, seven hundred seventy-four thousand, nine hundred thirty-nine".