398680339 has 2 divisors, whose sum is σ = 398680340. Its totient is φ = 398680338.

The previous prime is 398680309. The next prime is 398680361. The reversal of 398680339 is 933086893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398680339 - 2²³ = 390291731 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 398680292 and 398680301.

It is not a weakly prime, because it can be changed into another prime (398680309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199340169 + 199340170.

It is an arithmetic number, because the mean of its divisors is an integer number (199340170).

Almost surely, 2^398680339 is an apocalyptic number.

398680339 is a deficient number, since it is larger than the sum of its proper divisors (1).

398680339 is an equidigital number, since it uses as much as digits as its factorization.

398680339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 398680339 is about 19966.9812190025. The cubic root of 398680339 is about 735.9951282316.

The spelling of 398680339 in words is "three hundred ninety-eight million, six hundred eighty thousand, three hundred thirty-nine".