709458609 has 16 divisors (see below), whose sum is σ = 987446720. Its totient is φ = 452640960.

The previous prime is 709458601. The next prime is 709458623. The reversal of 709458609 is 906854907.

709458609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 709458609 - 2³ = 709458601 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709458601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45619 + ... + 59160.

It is an arithmetic number, because the mean of its divisors is an integer number (61715420).

Almost surely, 2^709458609 is an apocalyptic number.

It is an amenable number.

709458609 is a deficient number, since it is larger than the sum of its proper divisors (277988111).

709458609 is a wasteful number, since it uses less digits than its factorization.

709458609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104880.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 709458609 is about 26635.6642305012. The cubic root of 709458609 is about 891.8853309164.

It can be divided in two parts, 7094 and 58609, that added together give a triangular number (65703 = T₃₆₂).

The spelling of 709458609 in words is "seven hundred nine million, four hundred fifty-eight thousand, six hundred nine".