709769 has 2 divisors, whose sum is σ = 709770. Its totient is φ = 709768.

The previous prime is 709741. The next prime is 709777. The reversal of 709769 is 967907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697225 + 12544 = 835^2 + 112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-709769 is a prime.

It is a super-2 number, since 2×709769² = 1007544066722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (709729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354884 + 354885.

It is an arithmetic number, because the mean of its divisors is an integer number (354885).

2⁷⁰⁹⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

709769 is a deficient number, since it is larger than the sum of its proper divisors (1).

709769 is an equidigital number, since it uses as much as digits as its factorization.

709769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 709769 is about 842.4778928850. The cubic root of 709769 is about 89.2015379761.

The spelling of 709769 in words is "seven hundred nine thousand, seven hundred sixty-nine".