422609 has 8 divisors (see below), whose sum is σ = 466752. Its totient is φ = 379440.

The previous prime is 422581. The next prime is 422621. The reversal of 422609 is 906224.

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

It is a cyclic number.

It is not a de Polignac number, because 422609 - 2⁸ = 422353 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422609.

It is not an unprimeable number, because it can be changed into a prime (422689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (58344).

2⁴²²⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

422609 is a deficient number, since it is larger than the sum of its proper divisors (44143).

422609 is a wasteful number, since it uses less digits than its factorization.

422609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 422609 is about 650.0838407467. The cubic root of 422609 is about 75.0434710949.

The spelling of 422609 in words is "four hundred twenty-two thousand, six hundred nine".