709227009 has 10 divisors (see below), whose sum is σ = 1059462690. Its totient is φ = 472817952.

The previous prime is 709226977. The next prime is 709227017. The reversal of 709227009 is 900722907.

It can be written as a sum of positive squares in only one way, i.e., 506250000 + 202977009 = 22500^2 + 14247^2 .

It is not a de Polignac number, because 709227009 - 2⁵ = 709226977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (709227059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4377864 + ... + 4378025.

It is an arithmetic number, because the mean of its divisors is an integer number (105946269).

Almost surely, 2^709227009 is an apocalyptic number.

It is an amenable number.

709227009 is a deficient number, since it is larger than the sum of its proper divisors (350235681).

709227009 is an equidigital number, since it uses as much as digits as its factorization.

709227009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755901 (or 8755892 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 709227009 is about 26631.3163212035. The cubic root of 709227009 is about 891.7882695229.

The spelling of 709227009 in words is "seven hundred nine million, two hundred twenty-seven thousand, nine".