305483993 has 2 divisors, whose sum is σ = 305483994. Its totient is φ = 305483992.

The previous prime is 305483987. The next prime is 305484001. The reversal of 305483993 is 399384503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265136089 + 40347904 = 16283^2 + 6352^2 .

It is a cyclic number.

It is not a de Polignac number, because 305483993 - 2⁶ = 305483929 is a prime.

It is not a weakly prime, because it can be changed into another prime (305483933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152741996 + 152741997.

It is an arithmetic number, because the mean of its divisors is an integer number (152741997).

Almost surely, 2^305483993 is an apocalyptic number.

It is an amenable number.

305483993 is a deficient number, since it is larger than the sum of its proper divisors (1).

305483993 is an equidigital number, since it uses as much as digits as its factorization.

305483993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 305483993 is about 17478.1003830508. The cubic root of 305483993 is about 673.4874172472.

The spelling of 305483993 in words is "three hundred five million, four hundred eighty-three thousand, nine hundred ninety-three".