423627817 has 4 divisors (see below), whose sum is σ = 425756800. Its totient is φ = 421498836.

The previous prime is 423627791. The next prime is 423627829. The reversal of 423627817 is 718726324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423627817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423627817.

It is not an unprimeable number, because it can be changed into a prime (423628817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064193 + ... + 1064590.

It is an arithmetic number, because the mean of its divisors is an integer number (106439200).

Almost surely, 2^423627817 is an apocalyptic number.

It is an amenable number.

423627817 is a deficient number, since it is larger than the sum of its proper divisors (2128983).

423627817 is a wasteful number, since it uses less digits than its factorization.

423627817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128982.

The product of its digits is 112896, while the sum is 40.

The square root of 423627817 is about 20582.2208957148. The cubic root of 423627817 is about 751.0372711338.

The spelling of 423627817 in words is "four hundred twenty-three million, six hundred twenty-seven thousand, eight hundred seventeen".