494444444309 has 2 divisors, whose sum is σ = 494444444310. Its totient is φ = 494444444308.

The previous prime is 494444444303. The next prime is 494444444311. The reversal of 494444444309 is 903444444494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429850696900 + 64593747409 = 655630^2 + 254153^2 .

It is a cyclic number.

It is not a de Polignac number, because 494444444309 - 2¹⁶ = 494444378773 is a prime.

Together with 494444444311, 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 (494444444303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247222222154 + 247222222155.

It is an arithmetic number, because the mean of its divisors is an integer number (247222222155).

Almost surely, 2^494444444309 is an apocalyptic number.

It is an amenable number.

494444444309 is a deficient number, since it is larger than the sum of its proper divisors (1).

494444444309 is an equidigital number, since it uses as much as digits as its factorization.

494444444309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15925248, while the sum is 53.

The spelling of 494444444309 in words is "four hundred ninety-four billion, four hundred forty-four million, four hundred forty-four thousand, three hundred nine".