494084839 has 2 divisors, whose sum is σ = 494084840. Its totient is φ = 494084838.

The previous prime is 494084837. The next prime is 494084869. The reversal of 494084839 is 938480494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494084839 - 2¹ = 494084837 is a prime.

Together with 494084837, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 494084792 and 494084801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494084831) 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, 247042419 + 247042420.

It is an arithmetic number, because the mean of its divisors is an integer number (247042420).

Almost surely, 2^494084839 is an apocalyptic number.

494084839 is a deficient number, since it is larger than the sum of its proper divisors (1).

494084839 is an equidigital number, since it uses as much as digits as its factorization.

494084839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 494084839 is about 22228.0192324912. The cubic root of 494084839 is about 790.5581906687.

The spelling of 494084839 in words is "four hundred ninety-four million, eighty-four thousand, eight hundred thirty-nine".