705712939 has 2 divisors, whose sum is σ = 705712940. Its totient is φ = 705712938.

The previous prime is 705712937. The next prime is 705712981. The reversal of 705712939 is 939217507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705712939 - 2¹ = 705712937 is a prime.

Together with 705712937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 705712895 and 705712904.

It is not a weakly prime, because it can be changed into another prime (705712937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352856469 + 352856470.

It is an arithmetic number, because the mean of its divisors is an integer number (352856470).

Almost surely, 2^705712939 is an apocalyptic number.

705712939 is a deficient number, since it is larger than the sum of its proper divisors (1).

705712939 is an equidigital number, since it uses as much as digits as its factorization.

705712939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 705712939 is about 26565.2581203345. The cubic root of 705712939 is about 890.3129560517.

The spelling of 705712939 in words is "seven hundred five million, seven hundred twelve thousand, nine hundred thirty-nine".