423122209 has 8 divisors (see below), whose sum is σ = 439301160. Its totient is φ = 407049216.

The previous prime is 423122201. The next prime is 423122221. The reversal of 423122209 is 902221324.

It can be written as a sum of positive squares in 4 ways, for example, as 13950225 + 409171984 = 3735^2 + 20228^2 .

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 423122209 - 2³ = 423122201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423122201) 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, 18304 + ... + 34369.

It is an arithmetic number, because the mean of its divisors is an integer number (54912645).

Almost surely, 2^423122209 is an apocalyptic number.

It is an amenable number.

423122209 is a deficient number, since it is larger than the sum of its proper divisors (16178951).

423122209 is a wasteful number, since it uses less digits than its factorization.

423122209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52979.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 423122209 is about 20569.9345891036. The cubic root of 423122209 is about 750.7383596763.

It can be divided in two parts, 42312 and 2209, that added together give a square (44521 = 211²).

The spelling of 423122209 in words is "four hundred twenty-three million, one hundred twenty-two thousand, two hundred nine".