813260339 has 2 divisors, whose sum is σ = 813260340. Its totient is φ = 813260338.

The previous prime is 813260321. The next prime is 813260347. The reversal of 813260339 is 933062318.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813260339 - 2¹² = 813256243 is a prime.

It is a super-2 number, since 2×813260339² = 1322784757980789842, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 813260299 and 813260308.

It is not a weakly prime, because it can be changed into another prime (813260389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406630169 + 406630170.

It is an arithmetic number, because the mean of its divisors is an integer number (406630170).

Almost surely, 2^813260339 is an apocalyptic number.

813260339 is a deficient number, since it is larger than the sum of its proper divisors (1).

813260339 is an equidigital number, since it uses as much as digits as its factorization.

813260339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 813260339 is about 28517.7197370337. The cubic root of 813260339 is about 933.4187726915.

The spelling of 813260339 in words is "eight hundred thirteen million, two hundred sixty thousand, three hundred thirty-nine".