340432439 has 2 divisors, whose sum is σ = 340432440. Its totient is φ = 340432438.

The previous prime is 340432423. The next prime is 340432441. The reversal of 340432439 is 934234043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340432439 - 2⁴ = 340432423 is a prime.

Together with 340432441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340432459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170216219 + 170216220.

It is an arithmetic number, because the mean of its divisors is an integer number (170216220).

Almost surely, 2^340432439 is an apocalyptic number.

340432439 is a deficient number, since it is larger than the sum of its proper divisors (1).

340432439 is an equidigital number, since it uses as much as digits as its factorization.

340432439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 340432439 is about 18450.8113371743. The cubic root of 340432439 is about 698.2489834318.

The spelling of 340432439 in words is "three hundred forty million, four hundred thirty-two thousand, four hundred thirty-nine".