345636439 has 2 divisors, whose sum is σ = 345636440. Its totient is φ = 345636438.

The previous prime is 345636419. The next prime is 345636521. The reversal of 345636439 is 934636543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345636439 - 2⁵ = 345636407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345636395 and 345636404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345636419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172818219 + 172818220.

It is an arithmetic number, because the mean of its divisors is an integer number (172818220).

Almost surely, 2^345636439 is an apocalyptic number.

345636439 is a deficient number, since it is larger than the sum of its proper divisors (1).

345636439 is an equidigital number, since it uses as much as digits as its factorization.

345636439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 43.

The square root of 345636439 is about 18591.3000890201. The cubic root of 345636439 is about 701.7889202586.

The spelling of 345636439 in words is "three hundred forty-five million, six hundred thirty-six thousand, four hundred thirty-nine".