304245398393 has 4 divisors (see below), whose sum is σ = 311666017908. Its totient is φ = 296824778880.

The previous prime is 304245398371. The next prime is 304245398417. The reversal of 304245398393 is 393893542403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393893542403 = 3853 ⋅102230351.

It can be written as a sum of positive squares in 2 ways, for example, as 6088993024 + 298156405369 = 78032^2 + 546037^2 .

It is a cyclic number.

It is not a de Polignac number, because 304245398393 - 2¹⁶ = 304245332857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304245398593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710309696 + ... + 3710309777.

It is an arithmetic number, because the mean of its divisors is an integer number (77916504477).

Almost surely, 2^304245398393 is an apocalyptic number.

It is an amenable number.

304245398393 is a deficient number, since it is larger than the sum of its proper divisors (7420619515).

304245398393 is an equidigital number, since it uses as much as digits as its factorization.

304245398393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420619514.

The product of its (nonzero) digits is 8398080, while the sum is 53.

The spelling of 304245398393 in words is "three hundred four billion, two hundred forty-five million, three hundred ninety-eight thousand, three hundred ninety-three".