494622509 has 2 divisors, whose sum is σ = 494622510. Its totient is φ = 494622508.

The previous prime is 494622503. The next prime is 494622511. The reversal of 494622509 is 905226494.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334524100 + 160098409 = 18290^2 + 12653^2 .

It is a cyclic number.

It is not a de Polignac number, because 494622509 - 2⁴ = 494622493 is a prime.

Together with 494622511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494622503) 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, 247311254 + 247311255.

It is an arithmetic number, because the mean of its divisors is an integer number (247311255).

Almost surely, 2^494622509 is an apocalyptic number.

It is an amenable number.

494622509 is a deficient number, since it is larger than the sum of its proper divisors (1).

494622509 is an equidigital number, since it uses as much as digits as its factorization.

494622509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 494622509 is about 22240.1103639348. The cubic root of 494622509 is about 790.8448521870.

The spelling of 494622509 in words is "four hundred ninety-four million, six hundred twenty-two thousand, five hundred nine".