494605439 has 2 divisors, whose sum is σ = 494605440. Its totient is φ = 494605438.

The previous prime is 494605369. The next prime is 494605459. The reversal of 494605439 is 934506494.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494605439 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494605439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494605459) 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, 247302719 + 247302720.

It is an arithmetic number, because the mean of its divisors is an integer number (247302720).

Almost surely, 2^494605439 is an apocalyptic number.

494605439 is a deficient number, since it is larger than the sum of its proper divisors (1).

494605439 is an equidigital number, since it uses as much as digits as its factorization.

494605439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 494605439 is about 22239.7265945425. The cubic root of 494605439 is about 790.8357544227.

The spelling of 494605439 in words is "four hundred ninety-four million, six hundred five thousand, four hundred thirty-nine".