309057940459 has 2 divisors, whose sum is σ = 309057940460. Its totient is φ = 309057940458.

The previous prime is 309057940421. The next prime is 309057940463. The reversal of 309057940459 is 954049750903.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (954049750903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 309057940459 - 2¹¹ = 309057938411 is a prime.

It is not a weakly prime, because it can be changed into another prime (309057910459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154528970229 + 154528970230.

It is an arithmetic number, because the mean of its divisors is an integer number (154528970230).

Almost surely, 2^309057940459 is an apocalyptic number.

309057940459 is a deficient number, since it is larger than the sum of its proper divisors (1).

309057940459 is an equidigital number, since it uses as much as digits as its factorization.

309057940459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 309057940459 in words is "three hundred nine billion, fifty-seven million, nine hundred forty thousand, four hundred fifty-nine".