709969 has 6 divisors (see below), whose sum is σ = 768966. Its totient is φ = 655200.

The previous prime is 709967. The next prime is 709981. The reversal of 709969 is 969907.

709969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 50625 + 659344 = 225^2 + 812^2 .

It is not a de Polignac number, because 709969 - 2¹ = 709967 is a prime.

It is a super-2 number, since 2×709969² = 1008111961922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1932 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (128161).

2⁷⁰⁹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

709969 is a deficient number, since it is larger than the sum of its proper divisors (58997).

709969 is a wasteful number, since it uses less digits than its factorization.

709969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227 (or 4214 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 709969 is about 842.5965820011. The cubic root of 709969 is about 89.2099156465.

The spelling of 709969 in words is "seven hundred nine thousand, nine hundred sixty-nine".