422709 has 8 divisors (see below), whose sum is σ = 644160. Its totient is φ = 241536.

The previous prime is 422707. The next prime is 422711. The reversal of 422709 is 907224.

It is an interprime number because it is at equal distance from previous prime (422707) and next prime (422711).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422709 - 2¹ = 422707 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422709.

It is not an unprimeable number, because it can be changed into a prime (422701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10044 + ... + 10085.

It is an arithmetic number, because the mean of its divisors is an integer number (80520).

2⁴²²⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

422709 is a deficient number, since it is larger than the sum of its proper divisors (221451).

422709 is a wasteful number, since it uses less digits than its factorization.

422709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20139.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 422709 is about 650.1607493536. The cubic root of 422709 is about 75.0493896905.

The spelling of 422709 in words is "four hundred twenty-two thousand, seven hundred nine".