423639203 has 8 divisors (see below), whose sum is σ = 456547728. Its totient is φ = 390776544.

The previous prime is 423639193. The next prime is 423639239. The reversal of 423639203 is 302936324.

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 423639203 - 2⁴ = 423639187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423639203.

It is not an unprimeable number, because it can be changed into a prime (423630203) 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, 9101 + ... + 30497.

It is an arithmetic number, because the mean of its divisors is an integer number (57068466).

Almost surely, 2^423639203 is an apocalyptic number.

423639203 is a deficient number, since it is larger than the sum of its proper divisors (32908525).

423639203 is a wasteful number, since it uses less digits than its factorization.

423639203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22933.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 423639203 is about 20582.4974918011. The cubic root of 423639203 is about 751.0439997081.

The spelling of 423639203 in words is "four hundred twenty-three million, six hundred thirty-nine thousand, two hundred three".