709345739 has 2 divisors, whose sum is σ = 709345740. Its totient is φ = 709345738.

The previous prime is 709345733. The next prime is 709345807. The reversal of 709345739 is 937543907.

It is a happy number.

709345739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 709345739 - 2²⁴ = 692568523 is a prime.

It is a super-2 number, since 2×709345739² = 1006342754874912242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 709345693 and 709345702.

It is not a weakly prime, because it can be changed into another prime (709345733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354672869 + 354672870.

It is an arithmetic number, because the mean of its divisors is an integer number (354672870).

Almost surely, 2^709345739 is an apocalyptic number.

709345739 is a deficient number, since it is larger than the sum of its proper divisors (1).

709345739 is an equidigital number, since it uses as much as digits as its factorization.

709345739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 47.

The square root of 709345739 is about 26633.5453704534. The cubic root of 709345739 is about 891.8380307944.

The spelling of 709345739 in words is "seven hundred nine million, three hundred forty-five thousand, seven hundred thirty-nine".