705409739 has 2 divisors, whose sum is σ = 705409740. Its totient is φ = 705409738.

The previous prime is 705409709. The next prime is 705409769. The reversal of 705409739 is 937904507.

It is a happy number.

705409739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (705409709) and next prime (705409769).

It is a cyclic number.

It is not a de Polignac number, because 705409739 - 2⁸ = 705409483 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 705409739.

It is not a weakly prime, because it can be changed into another prime (705409709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352704869 + 352704870.

It is an arithmetic number, because the mean of its divisors is an integer number (352704870).

Almost surely, 2^705409739 is an apocalyptic number.

705409739 is a deficient number, since it is larger than the sum of its proper divisors (1).

705409739 is an equidigital number, since it uses as much as digits as its factorization.

705409739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 705409739 is about 26559.5508056895. The cubic root of 705409739 is about 890.1854341554.

The spelling of 705409739 in words is "seven hundred five million, four hundred nine thousand, seven hundred thirty-nine".