683398129 has 2 divisors, whose sum is σ = 683398130. Its totient is φ = 683398128.

The previous prime is 683398117. The next prime is 683398151. The reversal of 683398129 is 921893386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350700529 + 332697600 = 18727^2 + 18240^2 .

It is a cyclic number.

It is not a de Polignac number, because 683398129 - 2²⁹ = 146527217 is a prime.

It is not a weakly prime, because it can be changed into another prime (683398169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341699064 + 341699065.

It is an arithmetic number, because the mean of its divisors is an integer number (341699065).

Almost surely, 2^683398129 is an apocalyptic number.

It is an amenable number.

683398129 is a deficient number, since it is larger than the sum of its proper divisors (1).

683398129 is an equidigital number, since it uses as much as digits as its factorization.

683398129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The square root of 683398129 is about 26141.8845724634. The cubic root of 683398129 is about 880.8283045619.

The spelling of 683398129 in words is "six hundred eighty-three million, three hundred ninety-eight thousand, one hundred twenty-nine".