423440211 has 8 divisors (see below), whose sum is σ = 570407824. Its totient is φ = 279383040.

The previous prime is 423440207. The next prime is 423440231. The reversal of 423440211 is 112044324.

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

It is not a de Polignac number, because 423440211 - 2² = 423440207 is a prime.

It is a super-2 number, since 2×423440211² = 358603224583449042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423440231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727270 + ... + 727851.

It is an arithmetic number, because the mean of its divisors is an integer number (71300978).

Almost surely, 2^423440211 is an apocalyptic number.

423440211 is a deficient number, since it is larger than the sum of its proper divisors (146967613).

423440211 is a wasteful number, since it uses less digits than its factorization.

423440211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455221.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 423440211 is about 20577.6629139463. The cubic root of 423440211 is about 750.9263877144.

Adding to 423440211 its reverse (112044324), we get a palindrome (535484535).

The spelling of 423440211 in words is "four hundred twenty-three million, four hundred forty thousand, two hundred eleven".