709422609 has 16 divisors (see below), whose sum is σ = 1081893888. Its totient is φ = 405058512.

The previous prime is 709422601. The next prime is 709422647. The reversal of 709422609 is 906224907.

It is not a de Polignac number, because 709422609 - 2³ = 709422601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (709422601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14524 + ... + 40370.

It is an arithmetic number, because the mean of its divisors is an integer number (67618368).

Almost surely, 2^709422609 is an apocalyptic number.

It is an amenable number.

709422609 is a deficient number, since it is larger than the sum of its proper divisors (372471279).

709422609 is a wasteful number, since it uses less digits than its factorization.

709422609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27164.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 709422609 is about 26634.9884362656. The cubic root of 709422609 is about 891.8702450398.

The spelling of 709422609 in words is "seven hundred nine million, four hundred twenty-two thousand, six hundred nine".